【导语】“人间甜饼可琦安”通过精心收集，向本站投稿了18篇高一必背话题作文，下面是小编为大家整理后的高一必背话题作文，仅供参考，欢迎大家阅读，希望可以帮助到有需要的朋友。
- 目录
篇1：高一英语必背作文
This picture tells us the attitude of some people towards safety problems. Since they have the one-sided view towards the safety problems, they ignore these problems in our real life. They are just like the blind men in the story of “The Blind Men and the Elephant.” In fact, safety problems are everywhere around us.
So the picture shows some people are much worried about their safety problems. But they do not think about the problems in a wise way. They do not want to work out some effective ways to solve these problems. They just only care about their own problems blindly. But, in fact, what they are doing is very dangerous to their safety because, as the picture tells us, coconuts on the coconut tree may fall down anytime and hurt them.
In my opinion, they are very near-sighted and their behavior is foolish. We should take everything into account when we are thinking and doing. We should learn how to analyze the concrete problems in a concrete way. At the same time, we should do something to make our environment safe. When something bad happens, we should take some effective measures to reduce the harm or damage to the minimum. Also we should launch some campaigns to raise people's awareness to safety. We should make some laws to protect people and their property from the harm and loss.
篇2：高一英语必背作文
Nowadays, every student pays enough attention to study habit because of its importance. As for me, I have three ways to improve my study habits.
Firstly, make a plan for my study. The plan, I think, should include both the timetable, the regular and extra practice items. And the plan should be updated according to the progress of my study from time to time. Once the plan made, I follow it strictly.
Secondly, make full use of the time in the class. I take notes of the important points of every class. I do not talk about anything that has nothing to do with the class. More importantly, I pay all my attention to the class and listen to the teacher carefully.
Thirdly, critical study is also very important. It means that we should not accept anything blindly and with careful thought. Everything is not absolutely correct in the world and everything is changing. We can find many answers to a question. If we think critically, we may find many possibilities to solve a problem.
篇3：高一必背英语作文
假设你是刘明，寒假期间准备去北京旅游。请你根据下面的提示，用英语给你的网友李红写一封邮件。主要内容如下：
1. 你以前从未去过北京，请他当向导，带你参观长城，颐和园和其它名胜；
2. 想住在他家里，以便聊聊彼此的生活和学习；
3. 问候他的父母。
注意：
1. 词数 100左右；开头结尾已给出，不计入总词数
2. 颐和园 the Summer Palace
Dear Li Hong,
I haven’t heard from you for quite a long time. How have you been these days?
During the coming winter vacation, I’m going to Beijing for a tour. As I have never been to Beijing before, I’d like you to be my guide. I hope you can show me around the Great Wall, the Summer Palace and some other places of interest. What’s more, during my visit I hope to stay together with you in your house so that we can have a good talk about our life and studies. What do you think of my idea? I would like to know your opinion.
Please give my best regards（问候） to your parents.
Yours sincerely,
Liu Ming
篇4：高一必背英语作文
假设你是李华 , 你所在学校拟在下周开一个 “ 如何高效地学习英语 ” 的讲座。请你根据以下要点给史密斯教授写一封信 , 邀请他给学生做这次讲座。
信的内容包括 :
讲座目的 : 让学生了解英语学习策略
讲座内容 : 如何高效学习英语 , 如何提高学习英语的兴趣 , 如何自主学习
讲座时间 : 1 小时 30 分钟左右。
参考词汇 : 策略 strategy
Dear Professor Smith,
Our school is planning to have a lecture on how to learn English effectively for middle school students next week and I'm writing to ask you to come and give a talk on English learning strategies. It will help us understand how to learn English in effective ways and also increase our interest in learning it, thus making us learn it actively. Do you think one and a half hours will be enough for such a lecture? Please let me know as soon as possible so that I can make arrangements.
Looking forward to seeing you and enjoying the lecture.
Best wishes.
Yours,
Li Hua
高一必背英语作文6
假设你是吴东 , 你在网上认识了一个美国朋友 Jack, 他来信向你诉说交朋友的烦恼 , 他要求你就 friendship 这个话题发表你的观点和看法并给他一些建议。于是你根据你所了解的情况 , 给他回了一封 e-mail 。
[ 写作内容 ]
1. 友谊是每个人生活中最重要的事情之一 , 没有朋友 , 人会孤独的。
2. 多与朋友交流 , 让朋友知道你想与他交朋友以及你对朋友和友谊的理解。
3. 真正的朋友应该同甘共苦。
4. 邀请朋友参加一些活动如游泳、球赛等 , 赢得真正的友谊。
Dear Jack,
I'm glad to have received your e-mail but I am sorry you are having some trouble in making friends.
In my opinion, friendship is one of the most important things in everyone's life because without friends we will suffer loneliness. If you would like to take my advice, you'll win real friendship. First, why not communicate with your friend when possible and tell him/her what you think about friends and friendship and let him/her know that you want to make friends with him/her. Secondly, you should learn to share your happiness and sorrow with your friends. Thirdly, it would be a good idea if you like to invite him/her to join in some activities such as swimming and ball games, which can make you learn to appreciate your friends and cherish your friendship.
I hope you will find these opinions and ideas useful. Best wishes!
Yours,
Wu Dong
篇5：高一必背英语作文
写一篇题为 How I Overcome Difficulties in Learning English 的英语短文。 写作任务：你是怎样克服困难学好英语的？ ①你在英语学习中有哪些困难？
②你是如何克服这些困难的？ 审题构思
注意以下几点：
1. 存在的困难。在短文的第一段就应该写出“我”在英语学习中存在的问题，比如受家乡话发音的影响,/r/音和/l/音不分；记忆力差，很难扩大词汇量；阅读速度慢，不能在规定的时间内把试题做完等。
2. 采取的措施。在第二段中，要简单说明“我”是如何克服这些困难的。如通过勤学苦练，尝试其它不同的学习方法，或者向老师、同学等寻求帮助等等。
3. 说明的方法。我们可运用举例说明法，把学习中的困难和解决的办法列出来。
4. 心得与体会。唐僧师徒四人历尽磨难终于取得真经，那么当你成功地克服了英语学习中的困难后，必定也会充满成就感，总结出心得体会。何不简要点出来与各位朋友分享呢？
I had many difficulties when I started to learn English. Since I come from Chaoshan District, I could not tell / r / from / l /. Because they sound exactly the same in my dialect, I had great difficulty in telling “right” from “light”. My poor memory was another challenge for me when I decided to enlarge my vocabulary. I could only remember the English words for a while.
In order to tell the slight difference between / r / and / l /, I forced myself to practice a lot every day. Whenever I started to speak English, I reminded myself of the difference between “right” and “light” as well as “read” and “lead”. At first I felt it rather unnatural, but soon I got used to speaking in this way. As for my poor memory, I gave up mechanical memorization and tried many other ways. Finally I found a most efficient way for me: memorizing English words by their syllables and pronunciation.
This is how I succeeded in overcoming the difficulties in learning English and now I have a stronger belief in the proverb that where there is a will, there is a way.
篇6：高一必背英语作文简短
It is inevitable for people to face challenges and difficulties in life.And the only solution is to face and overcome it instead of running away.Persistence and confidence is essential in conquering troubles,therefore,we should be patient and never give up.
I will always be trapped in struggling circumstances but I will always get myself out because I have faith and confidence in myself.Once,I was attending an interview for a part-time job but I freaked out.However,I was confident and the interviewer was impressed by my attitude I convinced them I m a capable person.Hence,I always believe there is no problem since you have faith in yourself.
Mankind cannot grow up without difficulties and failure.And everyone should be glad to meet them because troubles help you to improve yourself.Thus,we should be kind and patient to our 'friends' and always be confident and persistent.
篇7：高一必背英语作文简短
Dear English Editor ,
There will be a new topic for the English newspaper.I hope it will be about the students' health in our school because students now are becoming sick often and still have to study hard.
First,students don't have enough time for lunch so some people are too thin.But some students have too much presure and eat a lot ,this makes them fat.
Second,students eye-sight is a big problem.Nowadays in China,more and more students are shortsighted because students spend too much time reading books or playing the computer.We should tell them to care for their eyes more often.
Last,food safety is very serious.People don't know what is healthy and what isn't.The school should tell the students what is good for our bodies and what isn't .In this way we can make sure the students can take care of our health.
篇8：高一英语必背作文
And I am a true boy
Seventeen years ago ,I was a baby ,I didn‘t know anything, just eating,watching and screaming.
As time goes by ,I become a little boy ,full of curiosity and mistakes, Ididn't know the society.
Now, with the help of my parents, teachers and friends, I get stronger, more wisdom and more responsible, I am a true boy, I get into the river of society and be together with different people, I learn much more, not only knowledge, but also the living skills ,I get out of young and innocent.And I understand a true boy should help others, do something for the society, be more generous, more polite.A true boy is a benchmarking of the society, although the society is king of dangerous, we should get into it and work it out, just for you, for me, for others.
I am now a boy, I should be like a man.
篇9：高一英语必背作文
Can Money Buy Happiness
Nowadays, a lot of people in society think the more money they have the more happiness they will obtain. As a result they will try their best to get money, even without considering the law.
But in my view, the greatest happiness lies in one’s satisfaction with one’s surroundings. So long as we can look at things with a happy heart, we can be happy. It has nothing to do with a mount of money we have. Therefore, people shouldn’t pay too much attention money we have. On the contrary (相反地) what they should do is to put their money to good use and try to have an optimistic outlook all the time.
篇10：高一英语必背作文
Natural Resources
For many years, we have been told that China is rich in various natural resources so many people take it for granted that they are inexhaustible. people have not considered that one day some of these natural resources will be used up and that we will then be faced with energy crisis.
As a matter of fact, many of the natural resources can't be replaced once used up such as the coal mines or oil fuels, etc . energy crisis will threaten our existence because of our excessive exploitation and because of the growing population.
Considering the above the government should try to take some action to protect the natural resources and people should be educated not to waste them.
篇11：高一英语必背作文
The Advantages and Disadvantages of Surfing the Internet
With the development of computer technology, the internet has become more and more popular.
Opinions are divided on whether students should surf the internet after class. Some students regard it as a great helper, the main reasons for this are listed as follows, first you can surf the internet for any information you need in a short time without working hard in the library; besides it is convenient to communicate with others by using the internet.
However, other students think that there are some disadvantages of the internet because there is also some information that's not good for the students. In addition, spending too much time playing games online will not only have a bad affect on study but also do harm to our health. Therefore，we should make proper use of the internet. It is of great importance for us to separate good plans from wild weeze.
篇12：高一英语必背作文
Work and Rest
Just as a famous saying goes: all work and no play makes Jack a dull boy. It is obvious that people should have adequate rest in order to work hard.
Yet some students especially those who are preparing for the college entrance examination are worried about their lessons and spend all their day time going over them. In their eyes they should sacrifice their rest time in order to get high scores on tests. As a result they suffer greatly from poor health and some of them may do poorly in the examinations.
In conclusion, we should be aware that nothing is more valuable than health which is a foundation of one success. With a poor health one can hardly succeed in anything he does. Therefore a student we should have enough rest to ensure a healthy body to work and study.
篇13：高一英语必背作文
Homework
Nowadays, more and more people in society have realized the importance of quality education. However students in primary schools and high schools are still complaining that they are overloaded with too much homework.
In many teachers' eyes, homework offers a good methods to strengthen the knowledge the students have obtained, yet they ignored the disadvantages that homework brings. For one thing too much homework will take up all the spare time of students leaving them unable to enjoy the rest of their lives; for another too much homework will do great harm to students' health both physically and mentally.
It is high time that schools thought more about the function of homework and tried to take practical measures to promote the all-round development of students.
篇14：高一必背英语作文简短
People always believe that when there is pressure, there is motivation, it seems that pressure equals motivation. We need pressure, it makes us keep move on, with pressure, we know what to do and how to fulfill our targets. Without pressure, we are just like a child, never grow up, having no idea of responsibility.
It is pressure that makes us become mature, we should have pressure, it indeed equals motivation at the certain level. While having too much pressure is bad for our mind, it is just like a burden that presses our mind, making people hard to take a breath. Nowadays the case of people commit suicide is increasing, the reason is that people can’t take a breath from much pressure, they feel there is no hope in life, no matter what they do, life just frustrates them. We should have the right attitude towards pressure.
篇15：高一必背化学方程式总结
高一必背化学方程式总结
Cu(OH)2+2HNO3=Cu(NO3)2+2H2O 蓝色固体溶解
Mg(OH)2+2HNO3=Mg(NO3)2+2H2O 白色固体溶解
Al(OH)3+3HNO3=Al(NO3)3+3H2O 白色固体溶解
Ca(OH)2+2HNO3=Ca(NO3)2+2H2O
Fe(OH)3+3HNO3=Fe(NO3)3+3H2O 红褐色沉淀溶解、溶液呈黄色
3NaOH + H3PO4=3H2O + Na3PO4
3NH3+H3PO4=(NH4)3PO4
2NaOH+CO2=Na2CO3+ H2O 吸收CO、O2、H2中的CO2、
2NaOH+SO2=Na2SO3+ H2O 2NaOH+SO3=Na2SO4+ H2O 处理硫酸工厂的尾气(SO2)
FeCl3+3NaOH=Fe(OH)3↓+3NaCl 溶液黄色褪去、有红褐色沉淀生成
AlCl3+3NaOH=Al(OH)3↓+3NaCl 有白色沉淀生成
MgCl2+2NaOH = Mg(OH)2↓+2NaCl
CuCl2+2NaOH = Cu(OH)2↓+2NaCl 溶液蓝色褪去、有蓝色沉淀生成
CaO+ H2O = Ca(OH)2 白色块状固体变为粉末、生石灰制备石灰浆
Ca(OH)2+SO2=CaSO3↓+ H2O 有白色沉淀生成 初中一般不用
Ca(OH)2+Na2CO3=CaCO3↓+2NaOH 有白色沉淀生成 工业制烧碱、实验室制少量烧碱
Ba(OH)2+Na2CO3=BaCO3↓+2NaOH 有白色沉淀生成
Ca(OH)2+K2CO3=CaCO3↓ +2KOH 有白色沉淀生成
CuSO4+5H2O= CuSO4·H2O 蓝色晶体变为白色粉末
CuSO4·H2OΔ CuSO4+5H2O 白色粉末变为蓝色 检验物质中是否含有水
AgNO3+NaCl = AgCl↓+Na NO3 白色不溶解于稀硝酸的沉淀(其他氯化物类似反应)
化合反应
1、镁在空气中燃烧：2Mg + O2 点燃 2MgO
2、铁在氧气中燃烧：3Fe + 2O2 点燃 Fe3O4
3、铝在空气中燃烧：4Al + 3O2 点燃 2Al2O3
4、氢气在空气中燃烧：2H2 + O2 点燃 2H2O
5、红磷在空气中燃烧：4P + 5O2 点燃 2P2O5
6、硫粉在空气中燃烧： S + O2 点燃 SO2
7、碳在氧气中充分燃烧：C + O2 点燃 CO2
8、碳在氧气中不充分燃烧：2C + O2 点燃 2CO
9、二氧化碳通过灼热碳层： C + CO2 高温 2CO
10、一氧化碳在氧气中燃烧：2CO + O2 点燃 2CO2
11、二氧化碳和水反应(二氧化碳通入紫色石蕊试液)：CO2 + H2O === H2CO3
12、生石灰溶于水：CaO + H2O === Ca(OH)2
13、无水硫酸铜作干燥剂：CuSO4 + 5H2O ==== CuSO4??5H2O
14、钠在氯气中燃烧：2Na + Cl2点燃 2NaCl
分解反应
15、实验室用双氧水制氧气：2H2O2 MnO2 2H2O+ O2↑
16、加热高锰酸钾：2KMnO4 加热 K2MnO4 + MnO2 + O2↑
17、水在直流电的作用下分解：2H2O 通电 2H2↑+ O2 ↑
18、碳酸不稳定而分解：H2CO3 === H2O + CO2↑
19、高温煅烧石灰石(二氧化碳工业制法)：CaCO3 高温 CaO + CO2↑
非金属单质(F2，Cl2,O2,S,N2,P,C,Si，H)
氧化性：
F2+H2===2HF (阴暗处爆炸)
F2+Xe(过量)==XeF2
2F2(过量)+Xe==XeF4 (XeF4是强氧化剂，能将Mn2+氧化为MnO4–)
nF2+2M===2MFn(M表示大部分金属)
2F2+2H2O===4HF+O2 (水是还原剂)
2F2+2NaOH===2NaF+OF2+H2O
F2+2NaCl===2NaF+Cl2
F2+2NaBr===2NaF+Br2
F2+2NaI===2NaF+I2
7F2(过量)+I2===2IF7
F2+Cl2(等体积)===2ClF (ClF属于类卤素：ClF+H2O==HF+HClO )
3F2(过量)+Cl2===2ClF3 (ClF3+3H2O==3HF+HClO3 )
Cl2+H2 2HCl (将H2在Cl2点燃;混合点燃、加热、光照发生爆炸)
3Cl2+2P 2PCl3 Cl2+PCl3 PCl5 Cl2+2Na 2NaCl
3Cl2+2Fe 2FeCl3 Cl2+Cu CuCl2
Cl2+2FeCl2===2FeCl3 (在水溶液中：Cl2+2Fe2+===2Fe3++3Cl )
Cl2+2NaBr===2NaCl+Br2 Cl2+2Br =2Cl +Br2
Cl2+2KI===2KCl+I2 Cl2+2I =2Cl +I2
3Cl2(过量)+2KI+3H2O===6HCl+KIO3
3Cl2+I–+3H2O=6H++6Cl–+IO3–
5Cl2+I2+6H2O===2HIO3+10HCl
5Cl2+I2+6H2O=10Cl–+IO3–+12H+
Cl2+Na2S===2NaCl+S↓ Cl2+S2–=2Cl–+S↓
Cl2+H2S===2HCl+S↓ (水溶液中：Cl2+H2S=2H++2Cl–+S↓
Cl2+SO2+2H2O===H2SO4+2HCl
Cl2+SO2+2H2O=4H++SO42–+2Cl–
Cl2+H2O2===2HCl+O2 Cl2+H2O2=2H++Cl–+O2
2O2+3Fe Fe3O4 O2+K===KO2
S+H2 H2S 2S+C CS2 S+Zn ZnS
S+Fe FeS (既能由单质制取，又能由离子制取)
S+2Cu Cu2S (只能由单质制取，不能由离子制取)
3S+2Al Al2S3 (只能由单质制取，不能由离子制取)
N2+3H2 2NH3 N2+3Mg Mg3N2 N2+3Ca Ca3N2
N2+3Ba Ba3N2 N2+6Na 2Na3N N2+6K 2K3N
N2+6Rb 2Rb3N N2+2Al 2AlN
P4+6H2 4PH3 P+3Na Na3P 2P+3Zn Zn3P2
H2+2Li 2LiH
篇16：高一英语必背语法
情态动词
一、can和could
1、can的用法
(1)表示体力和脑力方面的能力。
(2)表示对现在的动作或状态进行主观的猜测，主要用在否定句和疑问句中。
(3)表示可能性，理论上的可能性，意为“有时候可能会”，可用于肯定句。
(4)表示允许，意思与may接近。
(5)表示说话人的推测、怀疑、惊异、猜测或不肯定等，主要用于否定句、疑问句或感叹句中。
(6)can的特殊句型
cannot…too/enough表示“无论怎么...也不过分”“越...越好”
cannotbut+dosth.表示“不得不，只好”
2、could的用法
(1)表示能力，指的是过去时间。
(2)表示允许，指的是过去时间。
(3)表示可能，可以指过去时间，也可以指现在时间，表示语气缓和。
(4)委婉客气地提出问题或陈述看法，指的是现在时间。主要用于疑问句，回答时用can。
3、can与could的区别
can表推测时只用于否定句和疑问句(could无此限制)。couldn’t的可能性比can’t小。
4、can与beableto的区别
(1)现在时：无区别，但后者不常用。
(2)完成时;can没有完成时，此时要用have(has,had)beenableto。
(3)将来时：can没有将来时，要用willbeableto。
(4)过去时：could表示一般能力，was/wereableto表示在具体场合通过努力成功做成某事的能力。
二、may和might
1、may的用法
(1)表示询问或说明一件事可不可以做。
(2)表示一件事或许会发生或某种情况可能会存在，通常用在肯定句和否定句中。
注意：表示可能性时，can’t语气强，表示“不可能”，maynot语气弱，表示“可能不”。
2、might的用法
(1)表示询问或允许，指的是过去时间。
(2)表示可能发生的事，可以指过去时间，也可以指现在时间，语气更加不肯定，可能性比may小一些。
3、may与might的特殊用法
(1)“may+主语+动词原形”表示祝愿。
(2)“may/mightwell+动词原形”表示(完全)能，很可能。
(3)“may/mightaswell+动词原形”表示最好，满可以，倒不如。
(4)maybe是“情态动词+系动词be”结构，表示“可能有，可能在”，否定式为maynotbe。
maybe是一个词，为副词，意为“大概，或许，可能”，在句中作状语。
三、must的用法
1、表示“必须”，多强调说话人的主观看法。
2、must和haveto的区别：
(1)must表示说话人的义务或说话人主观认为“必须，应当”做某事;haveto表示由于某种外界原因而“必须，不得不”做某事。即must侧重说明主观看法，haveto强调客观需要。
(2)must只有一种形式，可用于现在、过去或将来时，但haveto有不同的形式，可用于不同的时态。
(3)在否定句中，don’tneedto,don’thaveto,needn’t表示没有义务;mustn’t表示禁止。
3、must的否定形式mustnot/mustn’t意为“不许，禁止”，表示绝对禁止。若表示“没必要，不必”，应使用needn’t或don’thaveto。
注意：对must作否定回答时，不用mustn’t，用needn’t或don’thaveto。
4、must表示“偏偏”，指令人不快的事情。
5、must用来表示推测，意为i“准是，肯定是”，一般用于肯定句，肯定程度比may,might大的多。
四、need的用法
1、need用作情态动词，后面接动词原形，通常用在否定句和疑问句中。
2、回答need时，肯定回答用must,否定回答用needn’t或don’thaveto。
3、need用作实义动词时，有时态、人称和数的变化，后面加todo。
4、needtodo和needdoing
needtodo中不定式的逻辑主语就是主句的主语;needdoing是主动形式表示被动含义，即need前的主语就是need后面的动词所表示的动作的承受者。
注意：want和require作“需要”讲时，和need的用法相同。
5、needn’thavedone与didn’tneedtodo
needn’thavedone表示过去本不必做但实际上却做了某事
didn’tneedtodo表示过去不必做而实际上也没做某事
五、dare的用法
1、dare用作情态动词，后面接动词原形，通常用在否定句和疑问句和条件句中;它没有人称和数的变化，但有过去式(dared)。
2、dare用作实义动词时，有时态、人称和数的变化，后面加todo。
注意：(1)Idaresay意为“我认为，我相信，很可能”。
(2)dare用作实义动词时，表示“敢冒(危险)，不俱”。
(3)dare可用于激将或挑战。例：Hedaredmetojumpdown.
六、will和would
1、will的用法
(1)可以表示主观意志、意愿，可用于各种人称。
(2)可以表示经常性、习惯性、倾向性等，意为“经常，惯于，总是”。
(3)表示命令(说话这确信命令一定会得到执行)或允诺。
(4)will可用于祈使句的附加疑问句。
(5)用于疑问句，表“邀请，请求”，常与第二人称you连用。
2、would的用法
(1)作为will的过去时态，用于过去时中，表示主观愿望或意志，意为“愿意，执意”。
(2)用与第二人称，表示谦恭的请求或征求意见，比will更为客气。
(3)表示过去的习惯，后接动词原形，意为“总是，总会”。
(4)would表意愿用于词组中。
Wouldlike“喜欢，想要”(=wouldlove)
Wouldrather“宁愿”
七、shall和should
1、shall的用法
(1)shall用于第一、三人称陈述句中，表示说话人征求对方的意见或向对方请示。
(2)shall用于第二、第三人称陈述句中，表示说话人给对方的命令、警告、允诺或威胁。
(3)用于所有人称，表示规章、法令、预言等，可译为“必须”。
2、should的用法
(1)表示义务、责任或劝告、建议、命令等，意为“应该”。
(2)表示有一定根据的推测、推论或可能性，意为“可能，该”(肯定的语气没有must表推测时强)。
(3)多用于疑问句中，表示惊讶、难以相信或不应该的事。
(4)oughtto和should的比较
A、oughtto也可以表示推论、可能性，和should用法一样。
B、在省略回答中，oughtto中的to可以省略。
C、should和oughtto表示做正确的事情或理应做的事情。
besupposedto意为“被期望，应该”，表示被期望发生或根据安排、要求做某事，或认为做某事是正常的。
八、hadbetter意为“最好”，’dbetter为其缩写形式，其后续跟动词原形。
注意：hadbetter的否定形式hadbetternot。
九、usedto“过去常常”，仅用于过去时态中，通常用于所有人称。
1、usedto+动词原形，表示过去(有规律的)习惯或过去某一时期的的状况，但现在已不存在。
2、其反意疑问句简略回答中，也有两种形式：didn’t，use(d)n’t
3、usedto和would的区别
(1)usedto可表示过去经常发生的动作或存在的状态，而would仅表示过去习惯性或重复性的动作。
(2)usedto强调过去的行为同现在的对比，含有“过去如此，现在已不再这样了”之意。Would仅表示过去习惯性动作，没有预先在对比的含义。
(3)usedto不能跟表确定时间短的时间状语连用。
(4)usedto可用于无人称句和存在句，而would则不可。
4、usedto与beusedtodo和beusedtodoing
(1)usedto表示“过去常常”隐含现在不这样了，其中to是不定式符号，后跟动词原形，仅用于过去时态。
(2)be/get/becomeusedto表示“习惯于”时，意为“变得习惯于“或“开始习惯于”。
(3)beusedtodo表示“被用来”。
十、情态动词后的某些动词形式
1、情态动词+havedone
(1)“must+have+done”表示对过去事情的肯定推测，译成“一定做过某事”，该结构只用于肯定句。
(2)“can't+have+done”表示对过去事情的否定推测，译成“不可能做过某事”。
(3)“can+have+done”表示对过去行为的怀疑，用于疑问句，译成“可能做过……吗?”
(4)“could+have+done”是虚拟语气，表示对过去事情的假设，意思是本来能够做某事而没有做。
(5)“may+have+done”表示对发生过的事情的推测，意思是“可能已经”或“也许已经”，用于肯定句中。
(6)“might+have+done”表示对过去事情的推测，might与may意思相同，多用于虚拟语气结构中;还可以表示“本来可能……”。
(7)“would+have+done”虚拟语气，表示对过去事情的假设，意思是“本来会做”。
(8)“should+have+done”意思是“本来应该做某事，而实际没做。”“shouldn't+have+done”表示本来不应该做某事，而实际做了。含有指责对方或自责的含意。
(9)“oughtto+have+done”表示过去应该做而实际并没有做，译成“理应做……”，往往表示遗憾。与“should+have+done”用法基本一样。
(10)“need+have+done”表示本来需要做某事而没有做。“needn't+have+done”则表示“本来不需要做某事而做了”。
2、情态动词+bedoing：表示对现在正在做的事情的推测。
十一、含有某些情态动词的反意疑问句
1、must
当must表示命令时，反意疑问句用needn’t。
当must表示推测时，反意疑问句与实际情况保持一致，即与把must删掉后的陈述句的反意疑问句保持一致。
2、can’t
当can’t表示没能力做某事时，反意疑问句用cansb.?
当can’t用于表推测时，反意疑问句由实际情况决定，即由去掉can’t后的真实陈述句决定。
篇17：高一英语必背语法
同位语从句
1.定义：用作同位语的从句叫做同位语从句。
2.用法：同位语从句的先行词多为fact,news,idea,thought,question,reply,report,remark等，关联词多用从属连词that。
如：They were all very much worried over the fact that you were sick.对你生病这件事，他们都很焦虑。
Where did you get the idea that I could not come? 你在哪儿听说我不能来?
Early in the day came the news that Germany had declared war on Russia.德国已对俄国宣战的消息一大早就传来了。
注：同位语从句偶尔由从属连词whether引导。
如：I have no idea whether he’ll come or not.我不知道他是否来。
连接代词who,which,what和连接副词where,when,why,how亦可引导同位语从句。
The question who should do the work requires consideration.谁该干这项工作，这个问题需要考虑。
We haven't yet settled the question where we are going to spend our summer vacation.到哪儿去度暑假，这个问题我们还没有决定。
It is a question how he did it.那是一个他如何做了此事的问题。
篇18：高一英语必背知识点精选
重点英语句型归纳11、The police asked him to set down what he had seen in a report. 警察让他在报告中写下他所看见的事情。
12、As I was about to go out and search for him， he happened to come in. 正当我打算出去找他时，他恰巧进来。
13、Mr. Jones lives alone and often feels lonely. 琼斯先生单独一人生活，常常感到孤独。
14、We tried to calm him down， but he kept crying. 我们试图让他平静下来，但他仍不停地哭着。
15、Does he dare (to、go out at night in such stormy weather? 他敢在这样一个暴风雨夜外出吗?
16、He would go through fire and water for his country. 他愿为国家赴汤蹈火。
17、That country suffered a heavy loss in the flood. 那个国家在水灾中遭受严重的损失。
18、World Englishes come from those countries where English plays an important role as a first or second language， either because of foreign rule or because of its special role as an international language.(定语从句、世界英语来自那些以英语为第一或第二语言的国家，英语在这些国家起重要作用，或是因为外国的统治，或是因为其作为国际语言的特殊地位。
19、All languages change when cultures communicate with one another. 当不同的语言互相沟通时，所有的语言都会发生变化。
20、Actually， the English spoken between about AD 450 and 1150 was based more on German than present day English.实际上，从公元450年到1150年，人们所说的英语更多的是以德语为基础的，而现代英语不是。
★ 必背古诗
★ 高中英语必背
★ 必背经典古诗词
★ 作文必背经典语录
★ 初中英语必背作文
★ 初中必背作文
★ 八年级必背古诗词
★ 小学必背古诗词
高一必背话题作文（精选18篇）
