“sdjining000”通过精心收集，向本站投稿了7篇(教育科学版)八年级英语期末练习--It的用法、There be句型，下面小编为大家带来整理后的(教育科学版)八年级英语期末练习--It的用法、There be句型，希望大家能够受用!
- 目录
篇1：(教育科学版)八年级英语期末练习--It的用法、There be句型
期末专题练习--It的用法、There be句型
［教学内容］
第一部分 It 的用法
概说：It是个非常简单的单词,但其用法却很灵活。
一、指代作用。It作句子的主语。
（一）It指前面已经提到过的人或事物。
1. What’s this? - It’s a chair.
2. Who is it? - It’s me.
提示：it代替上文提及的原物(复数用they)；
one指代上文提及的、泛指的可数名词单数（复数ones）；
that指代上文提及的定指的可数名词单数或不可数名词（复数those）。
（二）It指时间、季节。虚义。
1. What time is it? - It’s nine.
2. It’s time to go to school. Let’s go.
3. What day is today? - It’s Saturday.
4. What is the date today? - It is Oct. 1st.
5. What season is it? - It is summer.
（三）It指气候。虚义。
1. It is cold in this room. 这个房间很冷。
2. What’s the weather like today? - It’s fine. 今天天气怎么样？ 天气很好。
3. It often snows in winter in Harbin. 哈尔滨的冬天经常下雪。
（四）It指距离、情况等。虚义。
1. It is five kilometers from my home to the school. 从我家到学校有五千米。
2. It is very near from this shop to that. 从这个商店到那个商店很近。
3. It is a long way to the sea. 这离海很远。
4. Is it well with you? 你身体好吗？
二、It作形式主语。
动词不定式、动名词短语、从句在整个句中起主语作用，而这一部分用词较多，因此用it作为形式主语，放在句首。
（一）It + 谓语 + 动词不定式
形主 真主
1. It is difficult to climb a mountain. 爬山是很艰难的。
正常形式：To climb a mountain is difficult.
2. It is a good habit to do morning exercises. 做早操是个好习惯。
3. It’s important to study English. 学习英语很重要。
（二）It + 谓语 + 动名词短语
形主 真主
1. It is dangerous playing with fire. 玩火是危险的。
2. It is no use learning without thinking. 学而不思则罔。
3. It is wrong arguing with your parents. 和你的父母吵架是错误的。
（三）It + 谓语 + 名词性从句
形主 真主
1. It is pity that you didn’t see that good film. 你没看到那部好电影真可惜。
2. It is said that he will be late today. 据说他今天会来晚。
整理：It is / was difficult (easy, hard, important, useful, possible, a pity, a pleasure…) to do sth.
三、It作形式宾语。
It作形式宾语，代表其后所说的真正的宾语。
1. I find it not so difficult to learn a foreign language. 我发现学习一门外语并不难。
2. I remember I put it in my bag that the book I bought in Beijing. 我记得我把我在北京买的书放在书包里了。
四、用于表示强调的句型中。
1. It was here that I first met him. 我初次与他见面就在这儿。
2. It is English that Jim teaches us every Monday. Jim每个周一教我们学习英语。
五、用于某些习语中，虚义。
1. Keep at it! 别松劲！干下去！
2. You’ll catch it! 你可小心点儿！
第二部分 There be 句型
概说：There be 结构，也就是我们平时所说的“某地有某物”，表示存在的句型。
一. 肯定句。
There be + 主语+地点
There are some chairs in your room.
二. 否定句。
There be not ( any ,much) + 主语+地点
There aren’t any chairs in your room.
三. 一般疑问句。
Be 动词提前
Is there any chairs in your room?
四. 特殊疑问句。
特殊疑问词+一般疑问句
What are there in your room? There are some chairs in my room.
How many chairs are there in your room? There are six chairs in my room.
五. 热门考点。
1. there be 与 have 的区别。
There are six chairs in my room. (强调某地有某物) 在我的房间里有六把椅子。
I have six chairs. （强调某人拥有某物） 我有六把椅子。
2. be动词与名词的单、复数保持一致。
There is a girl over there. 那边有一个女孩。
There are five girls over there. 那边有五个女孩。
3. 就近原则。
There is a pen and some pencils in my bag. 我的书包里有一只钢笔和一些铅笔。
There are some pencils and a pen in my bag. 我的书包里有一些铅笔和一只钢笔。
4. there be +不定冠词+可数名词。
There is a photo of Cai Yilin on the wall. （正确） 墙上有一张蔡依琳的照片。
There is the photo of Cai Yilin on the wall. （错误）
5. there be 有时态变化。
There was an apple on the table yesterday. 昨天在桌子上有一个苹果。
There is going to be a meeting this morning. 今天早上要开会。
6. there be 的反意疑问句。
There is no water in the bottle, is there? 瓶子里没有水，是吗？
There are many students at school, aren’t there? 学校里有许多学生，不是吗？
六. 连线中考。
2003考例：
1) There______ a football game this afternoon. (武汉市)
A. will have B. is going to be C. has
答案：B
2) There was no time for the twins to go shopping. (改为反意疑问句) (哈尔滨市)
There was no time for the twins to go shopping, ______ ______?
答案：was there
3) Do you think______ an American film on TV tomorrow? (广西)
A. is there B. there's going to be
C. will there be D. there's going to have
答案：B
4)-What's on the plate? (吉林省)
-There______ some bread on it.
A. is B. are C. has D. have
答案：A
5) Jenny: How many countries ______ in Europe? (台湾省)
Betty: I'm not sure.
A. is it B. is there C. are they D. are there
答案：D
【模拟试题】（答题时间：30分钟）
一、仿照示例完成句子：
To run in the morning is very good. → It is good to run in the morning.
1. To play basketball must be fun. → _______________________
2. To walk in the park is pleasant. → _______________________
3. To learn a new language is very interesting. → _______________________
4. To read a long word is difficult. → _______________________
5. To be in class on time is important. → _______________________
二、翻译下列句子：
1. 今天非常热。
_______________________
2. 昨天是星期一。
_______________________
3. 从我家到学校很近。
_______________________
4. 正在下雨。
_______________________
5. 现在是七点半。
_______________________
三、选择
1. ______ a reading lamp on the table.
A. There is B. There has C. It is D. It has
2. ______ no coffee left yesterday.
A. It being B. There being C. It was D. There was
3. There _____ five pairs in the room.
A. were B. is C. are D. was
4. There ______ no use to ask him this question.
A. were B. is C. are D. was
5. There ______ a lot of people waiting for the bus.
A. are B. is C. were D. was
【试题答案】
一、依照示例，完成句子。
1. It must be fun to play basketball.
2. It is pleasant to walk in the park.
3. It is very interesting to learn a new language.
4. It is difficult to read a long word.
5.It is important to be in class on time.
二、翻译下列句子：
1. It’s hot today.
2. It was Monday yesterday.
3. It’s very near from my home to school.
4. It is raining now.
5. It is seven thirty now.
三、选择：
1. A 2. D 3. C 4. B 5. A
篇2：（教育科学版）初二期末模拟（一）
一. 单项选择
1. He never washes his hands before __________.
A. eat B. eating C. to eat
2. It’s important ________ your time wisely.
A. use B. to use C. uses
3. There’re two tigers in the zoo. ______ comes from China, ______ comes from Korea.
A. One, the other B. Another, the other C. Some, others
4. From now on, we __________ make our earth dirty any more.
A. not going to B. won’t C. will going to
5. He ________ take the bus at 11:00, because he got up late.
A. has to B. had to C. have to
6. Susan asks Mike _________ this bag for her.
A. carry B. carries C. to carry
7. They will make our bodies __________ and stronger.
A. healthier B. healthy C. healthiest
8. The boy is ________ young ________ to America himself.
A. too, to go B. so, that C. to, too go
9. When you study, you should avoid ________ places.
A. noise B. noisy C. noisily
10. Careful __________ in class _________ less work later.
A. listen, means B. listening, means C. listening, mean
11. He was ____________ the coming test last night.
A. get ready for B. getting ready for C. gets ready
12. He fell _________ at nine yesterday.
A. asleep B. sleep C. sleeping
13. It’s nice to take a walk _________ a fine day.
A. in B. at C. on
14. They decided ________ Sichuan food.
A. to eat B. eating C. ate
15. Why do you keep __________?
A. run B. running C. runs
16. They enjoyed __________ last week.
A. them B. themselves C. theirs
17. It saw the lions _________ at me at that time.
A. roaring B. roared C. to roar
18. __________ he did!
A. How well B. What well C. What a good
19. ________, we use our tongues.
A. Speak B. To speak C. Spoken
20. I think it will _________ tomorrow.
A. rain B. be rain C. rainy
二. 完型填空
Why 1 children go to school？Do you know？You may 2 that they go to school to learn Chinese，English and 3 subjects．This answer is 4 ．But do you know 5 they learn all these things？Do they learn all these things 6 school？
The answer is “No”．Children must learn how to learn at school．No one can learn 7 from school．When they 8 school they must continue（继续）to learn．So a good teacher at school 9 his students to learn something and teaches them the ways（方法）to learn it．Then children can continue to learn 10 after they leave school．
( ) 1. A. can B. do C. should
( ) 2. A. say B. speak C. talk
( ) 3. A. another B. an other C. other
( ) 4. A. right B. wrong C. hard
( ) 5. A. which B. who C. why
( ) 6. A. for B. to C. at
( ) 7. A. something B. nothing C. everything
( ) 8. A. leave B. over C. go to
( ) 9. A. teach B. teaches C. teaching
( ) 10. A. good B. fine C. well
三. 阅读理解
（A）
Tom is Mary's little brother. He is only 5, and doesn't know how to read and write. One day Mary saw her little brother at the table with a pen in his hand, a piece of paper in front of him. “What are you doing, Tom?” she asked. “I'm writing a letter to my friend, Mike,” said Tom. “But how can you?” said Mary. “You even don't know how to write.” “Well,” said Tom. “It doesn't matter, because Mike doesn't know how to read.”
1. How old is Mary? __________
A. Five B. Less than five C. We don’t know
2. ---Can Tom read and write well？
---__________________.
A. Yes, he can B. No, he can’t C. He can do all the things well
3. One day Tom wanted to __________.
A. play baseball B. watch TV C. writer a letter
4. Who’s Tom’s friend?
A. Mary. B. Mike. C. Tom.
5. Can Mike read the letter?
A. Yes, he can. B. No, he can’t. C. No, he doesn’t.
（B）
There's a village, and all the people in the village are rich. They have beautiful houses and very rich clothes. They are rich because they are very good at business(经商). They buy things and sell things.
One day a young man comes to the village. He goes to the market place and has a talk with a businessman. “Look,” he says. “The people in your village are all rich. You are all good businessmen. Why?” “Why?” answers the businessman, “That is because we eat many fish, and the fish is very good for our brains. It makes us clever.” “I see,” says the young man. “And what is the name of this fish?”“I don't know,” says the businessman. “But if you give me ten pounds, I can sell you some.” The young man thinks this is a good idea. He gives the businessman ten pounds and the businessman sells him his fish.
根据短文内容判断正误，正确的写“A”，错误的写“B”
( ) 1. All the people in the village are rich because they do business well.
( ) 2. One day a young man comes to the market place and has a talk with a policeman.
( ) 3. The businessman knows the name of the fish.
( ) 4. The businessman sells his fish to the young man.
( ) 5. The businessman gets eight pounds from the young man.
四. 任务性阅读
（A）用长方框内所给词的适当形式填空
Liu Xin 1 a good habit. He always respects the elderly. I think every one should 2 the elderly. However he also has a bad habit. He never 3 his hands before 4. I think he should wash his 5 before he eats.
1 _________ 2 ________ 3 __________ 4 __________ 5 __________
（B）阅读短文，按要求完成下列各项
A year ago I wasn’t in England. I was on a farm in my country. It was very beautiful. There were trees and flowers everywhere. We lived in a nice farmhouse near the seaside. We had many animals on the farm: cows, sheep, horse, pigs and chickens. We took good care of them.
It was great fun to stay on the farm, but we had to work hard. My father worked in the fields. My sister and I helped him with the farm work. My mother cooked food for us. After work, we went swimming in the sea or went fishing in the river. We had a good time there. When my holiday was over. I came back to England. But I was sorry to go away from our farm.
1. 单词释义
E_________ a place which English people live in
e__________ every place
2. 同义句转换
My sister and I helped him with the farm work.
My sister and I helped him _______ _______ the farm work.
3. 简略回答问题
When did the writer come back to England? _____________
【参考答案】
一. 1. B 2. B 3. A
4. B
提示：We are not going to make our earth dirty any more.
We will not make our earth dirty any more.
5. B 6. C 7. A
8. A
提示：The boy is so young that he can’t go to America himself.
9. B
提示：noise n. 喧闹声, 噪声, 噪音
noisy adj. 吵杂的
noisily adv. 吵闹地
10. B 11. B 12. A 13. C 14. A
15. B 16. B 17. A 18. A 19. B
20. A
提示：It will be rainy.
It will rain.
二. 1. C 2. A 3. C 4. A 5. C
6. C 7. C 8. A 9. B 10. C
三. （A） 1. C 2. B 3. C 4. B 5. B
（B） 1. A 2. B 3. B 4. A 5. B
四. （A） 1. has 2. respect 3. washes 4. eating 5. hands
（B） 1. England everywhere
2. to do
3. When his holiday was over.
篇3：八年级物理上册教育科学版教案
一、物理学基本常识：
1、物理学是认识世界的科学;物理学是改变世界的科学;物理学是产生科学思想、科学方法和科学精神的科学，因而是对人的科学素质培养具有特殊教育功能的科学。
2、物理学是一门研究自然界物质结构、物体间相互作用和物质运动变化最一般规律的科学。它是一门自然科学。
3、物理学的研究对象是各类物理现象：如力的、电的、磁的、光的、热的、声的、核变化„„等现象。 物理研究的主要任务是找出运动变化的规律，并阐明其原因。物理研究的主要目的是认识自然、改造自然，为人类服务。
4、物理学是一门以观察和实验为基础的科学;研究物理问题的主要方法是进行观察和实验。观察时，要有明确的观察目的，并注意引起运动变化的原因和条件。
5、科学探究的7个基本环节依次是：提出问题、猜想与假设、制定计划设计实验、进行实验收集证据、分析论证、评估、交流与合作。其中最基本的环节是观察思考、提出问题，最主要的环节是进行实验、收集证据，而贯穿整个过程的则是交流与合作。
6、物理学发展的三个主要历史阶段：1、“日心说”的建立和“相对运动”理论的建立，主要代表人物是哥白尼、伽利略;2、经典物理学(经典力学)的建立，主要代表人物是牛顿;3、量子理论的建立和“相对论”的创立，主要代表人物是玻尔和爱因斯坦。
二、测量的基础知识：
( 一 )常用的测量工具：
长度： 基本工具是刻度尺，其次有游标卡尺、千分尺等。
时间： 基本工具是钟表。根据不同的实际要求还有停表等。(如何做周期性变化的事物都可用来测量时间，如脉搏等)。
质量： 基本工具是天平，其次还有台秤、案秤、杆秤等。
力 ： 基本工具是测力计。实验室最常用的测力计是弹簧测力计。
电流： 基本工具是电流表
电压： 基本工具是电压表。
体积： 液体体积通常用量筒或量杯测量。
温度： 基本工具是温度计。实验室里最常用的温度计是液体温度计，它是利用液体热胀冷缩的性质制成的。
( 二 )长度(L)、时间( t )的单位：
1、长度的国际主单位(或称SI基本单位)是“米”，符号为“m”。
1 m = 1000 mm ; 1 mm = 1000 µm ; 1 µm = 1000 nm ; 1 km = 1000 m
(1 m = 10 dm ， 1 dm = 10 cm ， 1 cm = 10 mm )
1光年 ≈ 9 . 46×10km (天文学单位) 1埃 = 10
2、由长度单位组成的“面积”和“体积”的单位：
面积：主单位是“平方米”( m)。1 m = 100d m = 10000 cm = 106mm
体积：主单位是“立方米”(m)。1 m= 1000 d m= 10 cm(mL)
1立方分米( d m)又叫“1升”或“公升”; 1立方厘米(cm)又叫1“毫升”; 1立方米在工程学上通常又简称“1方”或“1立方”。
3、时间的国际主单位是“秒”，符号为“ s ”。
1 h = 60 min 1 min = 60 s 1 h = 3600 s
1天( d ) = 24 h = 86400 s 1平年 = 365天 1闰年366天
(三)长度的测量：
1、刻度尺的使用：
使用前必须作到：
(1)“三观察”并记录： A、观察“ 0 ”刻度线是否磨损;
B、观察其量程;
C、分度值(必须明确单位)。
(2)根据要求选择适当的刻度尺(只要能满足测量要就行，别以为越精密越好)。 使用时必须做到和应注意的事项：
A、放置： a、必须使有刻度的一边与被测长度线段重合或平行，从刻度 尺的“0”刻度线或某一完好刻度线量起;
b、“0”刻度线已磨损的刻度尺必须从某一完好刻度线两起; c、使用厚刻度尺时，必须使其有刻度的一边紧贴被测物。
B、读数： a、视线必须与尺面垂直;
b、必须估读并记录到分度值的下一位;
C、必须在数字后面写上所用的单位;
d、若不是从“0”刻度线量起，则必须分别读出起点和终点的 3 333 3 632222212 - 10m (微观学说用)
读数，然后用终点读数减去起点读数。
2、特殊长度的测量方法：
A、曲线长度测量： “化曲为直”——采用“重合法”或“转轮法”;
B、隐含长度测量： “化暗为明(即等量替代)法”：
柱、锥、台的高和球体的直径用1直尺加1三角板配合的方法在水平台面上测量;硬币直径用2三角板加1直尺配合的方法测量。——“直尺 三角板配合法”;
C、微小长度测量： “测多算少”——用“积累法”测量：
细铁丝直径用“绕线法”测——紧密缠绕，测出线管长L和线圈匝数 n ，然后用d = L / n 计算出直径;
一张纸的厚度用“重叠法”测量：将一叠纸压紧，先测出总厚度L ， 再数出总张数n ，然后用L/ = L / n计算出1张纸的厚度。
( 注意：1张纸有2个页码，纸的张数 = 总页码数÷ 2 )
(四)误差的初步知识：
1、误差的概念: 测量的结果与真实值间的必然差异叫做误差。
2、误差的产生原因：主要与测量的工具的精密程度和测量者本身的因素有关。 (还跟环境因素有关)
3、误差与错误的区别：误差是必然存在，无论怎样也不能完全避免而只能相对 减小的;而错误则是操作不正确或粗心大意造成的，它是可以避免而且应该避免的。
4、减小误差的常用方法：适当选用精密度较高的测量工具;用多次测量的平均 值作为测量结果。
注意：在计算平均值时，错误的数据一定要剔除，不能纳入计算，平均值的小数位数必须与每次的测量值相同(单位一致时)。
三、科学探究的方法：
(一)基本方法：科学探究的方法很多，常见的有：提出假设、建立理论，观察法，模型法 ，实验验证法，控制变量法，类比法，比较法„„等。其中最常用的方法是“控制变量法 ”(也叫变量控制法)。
(二)控制变量法：是指在研究一个物理问题与多个因素的关系时，常采用分步探究的方法 。即对各个因素分别进行探究。当探究与某一个因素的关系时，把其他因素控制为相同(不变)，只让要探究的因素发生变化，然后把各步的探究结果综合起来得出总的探究结论。这是初中物理学中最常用的探究方法。
篇4：八年级物理上册教育科学版教案
一、声音的产生与传播：
(一)、声源：一切正在发声的物体都叫做声源。
(二)、声音的产生：
1、产生：声音是由物体振动发生的。
(但需注意：不是只要有振动就一定会发声，也不是只要在发声就一定能听到声音)
2、发声体的性质：一切正在发声的物体都在振动。振动停止，发声也就停止。 (但需注意：某些情况下，可能由于回声的原因，发声虽已停止但仍可听到声音)
(三)、声音的传播：
1、传播形式：以声波的形式，以声源处为中心向四周传播。
声波具有能量。利用声波可以传递信息和能量。
2、传播条件：声音必须依靠介质(传播声音的媒介物质)传播。真空不能传声。 声音能够在各种介质(固体、液体和气体)中传播。
我们平常听到的声音是声波沿空气传来的。( 我们平常听到自己讲话的声音则 是通过自身的骨骼传来的 )
3、传播速度：声音在不同的介质中的传播速度不同，传声性能也不同。
一般说来：在固体中传播得最快，在液体中较慢，而在气体中传播得最慢。 空气中的声速： 15 ℃ 时340 m / s ; 25 ℃ 时 346 m / s 。 真空中： 0 。
(四)、声波的频率：
1、产生声波的振动频率： 10- 4 12 ~ 10Hz 。
- 4 2、人的听觉频率范围： 20 ~20000 Hz 。 3、次声波的频率范围： 低于20 Hz (10~20 Hz )。
12 4、超声波的频率范围： 高于 20000 Hz 。(20000 ~ 10Hz )
二、乐音的基本特征：
(一)、音调：
1、概念：人耳听到的声音的高低。
2、决定因素：发声体(声源)振动的频率。(频率越高，音调越高。反之则越低)
(二)、响度(音量)：
1、概念：人耳听到的声音的大小(又叫音量)。
2、决定因素：发声体振动的振幅(振动幅度)大小(振幅越大，响度越大)。 影响因素：到声源的距离、声音在传播过程中的分撒播内程度。
注意：音调和响度是两个不同的概念，一定要区分清楚。
(三)、音色(音品)：
1、概念：声音的品质、特色。(又叫音品)
2、决定因素：主要由发声体自声的因素决定。
3、应用：是辨别不同声音的主要依据。
扩音器的作用、要求：扩音器的作用主要是增大声音的响度(音量)，但必须保 证不改变声音的音调和音色(即所谓的“增益、保真”)。
三、回声、混响与共鸣：
(一)、回声：
声波在传播过程中若遇到障碍物时，会像光一样发生反射。
1、回声、回声现象：
我们直接听到的从声源发出的声音，叫做原声。
因声波在传播过程中若遇到障碍物时被反射回来而使我们再次听到的声 音，叫做回声。 (这种现象叫做回声现象。)
2、人耳区分原声和回声的条件：
人耳要能区分原声和回声，回声必须比原声晚到达人耳0 . 1秒以上。 (在教室里听不到老师讲课的回声，就是因为其时间间隔短于0 . 1秒)
3、声音的叠加：
若原声与毁伤到达人耳的时间间隔短于0 . 1秒，则回产生原声与回声互相叠 加的现象，而使听到的声音更加响亮。
(二)、混响：
1、概念：声波在室内传播时，被障碍物不断反射、吸收。这样，当声源停止振 动后，声音还回持续一段时间。这种现象叫做 混 响 。
混响持续的时间叫做混响时间。
2、利弊： 混响可使声源听起来更加丰满、圆润而具有立体感。(利)
混响时间过短，声音干涩不丰满;过长时，各种声音混在一起而听不 清楚。(弊)
( 影、歌剧院的墙壁和天花板制成凹凸不平—— 燕子泥形状，就是 为了增强反射而适当减弱回声，缩短混响时间。 )
3、本质： 混响现象的本质就是回声现象。
(三)共鸣现象：
1、概念： 两个相同(固有频率相同)的物体，当它们间的距离接近到一定距离 时，若其中一个物体因震动而发声，则另一个物体也会发出同样的声音。
这种现象叫做共鸣。
2、本质：共鸣现象是由于共振而引起的。
3、应用、实例： 弦乐器的共鸣箱.„„，古代著名的‘钟鸣磬响“现象„„等。
(四)、动物与声音：
其实，各种动物也都有它们各自的发声器官和听觉器官。只是由于它们的发出的 声音有些我们听不见(超出人的听觉频率范围)，我们讲话的有些声音它们听不见(超 出了它们的听觉频率范围)的缘故。
请记注本章第三节中《动物与声音》部分的相关介绍的内容。
四、噪声：
(一)噪声的定义：
1、物理学定义：物体做杂乱无章的不规则震动所发出的声音叫做噪声。
2、环境保护上的定义：一切干扰人们正常休息、学习和工作的声音，以及对人们 健康不利的声音，都叫做噪声。
3、噪声与乐音的区别、转化：
区别：从本质上(声源的震动情况)和效果上(给人的感觉)两方面区别。 转化：噪声难以成为乐音。而乐音在不该出现的场所、时间出现，或音量超出 某一限度时就会转化为噪声。
(二)、声音的等级表示：
1、声强级：声音的强弱等级叫做声强级。
2、声强级的单位： 分贝 ，符号为“ d B ”。
3、一些声音的分贝数和人们相应的主观感受：见课本P50 。
(三)、噪声的危害：
1、污染环境： 噪声会对环境造成污染。“噪声污染”是当代社会四大污染之一。
2、危害： 主要有两大方面：
A、防碍人们的正常休息、学习和工作，影响学习和工作的效率、效果。
B、危害人体健康。
另 外： 噪声过大还有可能使某些设备遭到损害。
需注意： 噪声也可以加以利用。如用噪声除草、推迟或提前使植物种子发芽、探测病灶、显示水底情况„„等。
(四)、减弱和防止噪声危害的主要途径：
减弱、控制噪声和防止噪声的危害，主要从声音的产生、传播和接收三个环节 入手，应着眼于消声、隔声、吸声三个环节。
其基本途径为： 1、在声源处减弱。 2、在传播过程中减弱。 3、在人耳处减弱。
篇5：中考英语句型转换相关练习
对划线部分提问
1. Jim has stayed in the college for five years.
______ has Jim stayed in the college?
2. The twin brothers get on very well.
_____ the twin brothers get on?
3. My foreign friends will arrive in half an hour.
______ will your foreign friends arrive?
4. The car near the river is mine.
______ is yours?
5. Its very wet and hot today.
_____ the weather ______ today?
6. He is looking for a pair of black shoes.
_____ is he ______?
7.He went to the station to meet the twins last Wednesday.
____ did he ____to the station to meet the twins?
8. Jack has been to Hong Kong only once.
How ______ has Jack been to Hong Kong?
9. We have a class meeting once a week.
____________ have a class meeting.
答案：
1. How long 2. How do 3. How soon
4. Which car 5. Whats, like 6. What, doing
7. When, go 8. many times 9. How often do you
[中考英语句型转换相关练习]
篇6：中考英语句型转换练习
A.改为感叹句
1. The film is very interesting.
________ the film is！
2. English is very useful.
_____ useful subject English is！
3. These flowers are so beautiful.
______ these flowers are！
4. The children are singing and dancing happily.
______ the children are singing and dancing！
5. They are running fast.
______they are running!
6. Her sister is a very lovely girl.
(1) ______ lovely girl her sister is！
(2) _____ her sister is！
B.改为陈述句
7. How beautiful these flowers are！
______ so beautiful flowers.
8. What a nice box it is！
The box _____.
9. How bright your dictionary is！
Your dictionary is______.
10. How hard the workers are working！
The workers are ______.
答案：
1. How interesting 2. What a 3. How beautiful
4. How happily 5. How fast 6. (1)What a (2)How lovely
7. These are 8. is very nice 9.very bright
10. working hard
[中考英语句型转换练习]
篇7：中考英语句型转换练习
简单句、并列句、复合句相互转换
1.The water was so dirty that we couldnt drink it.（改为简单句）
The water was ______ dirty for us ______ drink.
2.Does the shop close at six every day?Do you know?（两句合并为一句）
Do you know ___ the shop ____ at six every day?
3.The question isnt easy enough for them to answer.（改为复合句）
The question is ______ that they ___ .
4. I really dont know which book I should choose.（改为简单句）
I really dont know_____.
5. I dont know when we shall meet again. ( 改为简单句)
I dont know when ______ again.
6.The man is very strong and he can carry the heavy bag. (改为简单句)
The man is _______ to carry the heavy bag.
7.Does the girl need any help? he asked me.（改为复合句）
He asked me ______ the girl ______ some help.
8.I dont know what to do next.（改为复合句）
I dont know what ______ next.
9.George has two cabbages. Mary has only one.（用比较级改写句子）
George has ______ cabbages ______ Mary.
★ 英语句型造句
★ 初三英语句型
★ 英语作文常用句型
★ 考研英语经典句型
(教育科学版)八年级英语期末练习--It的用法、There be句型（精选7篇）
