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新目标八年级下U1单元知识讲解

新目标八年级下U1单元知识讲解
新目标八年级下U1单元知识讲解

Unit 1Will people have robots?

I.词汇

·more, less, fewer

·I don’t agree. = I disagree.

·I agree (with you).

·in five years

·on computers

·on paper

·besides

·on vacation

·many different kinds

·of goldfish

·no more

·be free

·live in

·as a reporter

·free time

·fall in love with …

·like doing sth

·keep a parrot

·look smart

·be able to do….

·Are you kidding?

II. Grammar:

·一般将来时

·there will be

·few, a few, little, a little, much, many

语法小结:

一、一般将来时

1.用be doing表示将来:主要意义是表示按计划、安排即将发生的动作,常用于位置转移的动词。

如:go, come, leave, arrive等,也可用于其他动作动词。

We are having fish for dinner.

We are moving to a different hotel the day after tomorrow.

这种用法通常带有表示将来的时间状语,如果不带时间状语,则根据上下文可表示最近即将发生的动作。

A: Where are you going?

B: I am going for a walk. Are you coming with me?

A: Yes, I am just coming. Wait for me.

2.用be going to do表示将来:主要意义,一是表示“意图”,即打算在最近的将来或将来进行某事。

Are you going to post that letter?

How long is he going to stay here?

I am going to book a ticket.

另一意义是表示“预见”,即现在已有迹象表明将要发生或即将发生某种情况。

It’s going to rain.

George is putting on weight, he is going to be quite fat.

3. 用will/ shall do表示将来:

主要意义,一是表示预见。

You will feel better after taking this medicine.

Do you think it will rain?

二是表示意图.

I will not lend the book to you.

Take it easy, I will not do it any longer.

基本结构:

She will come to have class tomorrow.

Will she come to have class tomorrow?

She won’t come to have class tomorrow.

What will she do tomorrow?

二、There be结构

1. there be结构中的be是可以运用各种时态的。

There is going to be a meeting tonight.

今晚有个会议。

There was a knock at the door.

有人敲门。

There has been a girl waiting for you.

有个女孩一直在等你。

There will be rain soon.

不久天就要下雨了。

2. 动词be单复数形式要跟there be之后的真正的主语一致。并且要根据就近一致原则来变换be的单复数形式。

如:

There is a book on the desk.

课桌上有一本书。

How many people are there in the city?

这个城市里有多少人口。

There is a pen and two books on the desk.

课桌上有一个钢笔和两本书。

There are two books and a pen on the desk.

课桌上有两本书和一个钢笔。

There are some students and a teacher in the classroom.

在教室里有一些学生和一位老师。

There is a teacher and some students in the classroom.

在教室里有一位老师和一些学生。

3. 在there be引起的句子结构中,用来修饰主语的不定式主动形式和被动形式均可。

There is no time to lose(=to be lost).

时间紧迫。

There is nothing to see(=to be seen).

看不见有什么。

There is nothing to do.(=to be done)

无事可做。

4、There is no doing.

(口语)不可能…….

There is no telling when he will be back.

无法知道他什么时候回来。

There is no knowing what he is doing.

无法知道他在做什么。

三、few, a few, little, a little, much, many

few和a few修饰或代替复数可数名词,few表示否定意义,a few表示肯定意义;little和a little修饰或代替不可数名词,little表示否定意义,a little表示肯定意义。

可数名词和不可数名词前都可用some, any, a lot of, lots of 等修饰。可数名词表示不确定数量时,用a few, few,many修饰。询问数量时用how many;不可数名词表示不确定数量时,用a little, little,much 修饰。询问数量时,用how much。

四、练习Exercise:

I. Multiple choice

1. Are you _________ your winter holiday next week?

A. going to have

B. will have

C. had

D. have

2. Do you often ______ from your parents?

A. heard

B. hears

C. to hear

D. hear

3. _____ Lucy _________ her homework in her room now?

A. Is, doing

B. Does, do

C. Do, do

D. Did, do

4. She dances better than Mary _______.

A. is

B. has

C. does

D. dance

5. Mary usually _______ up at five o’clock.

A. will get

B. got

C. get

D. gets

6. They ______ four English classes a week last term.

A. has

B. have

C. had

D. are having

7. A bird ca n ______ but I can’t.

A. flies

B. flying

C. flew

D. fly

8. They _______ to see me yesterday evening.

A. will come

B. comes

C. are coming

D. came

9. We’re moving to a different town ___________.

A. the day before yesterday

B. last Sunday

C. the day after tomorrow

D. a week ago

10. Look! The monkeys _________ the tree.

A. climb

B. are climbing

C. is climbing

D. were climbing

11. When _____ you ______ to Australia? Next Monday.

A. did, fly

B. will, fly

C. are, fly

D. do, fly

12. Which team ________the next football match?

A. wins

B. won

C. will win

D. win

Keys: 1—5ADACD 6—10 CDDCB 11—12 BC

II. 句型与结构

(I). Read each sentence. Add a second sentence with‘ll using the words in parentheses.

1. I feel sick today. (be better tomorrow)

I’ll be better tomorrow.

2. Gina has six classes today. (have a lot of homework tonight)

__________________________________________________

3. I’m tired now. (sleep later)

__________________________________________________

4. My parents need a new car. (buy one soon)

__________________________________________________

5. We can’t leave right now. (leave a little later)

__________________________________________________

6. The weather is awful today. (be better tomorrow)

__________________________________________________ Keys:

2. She’ll have a lot of homework tonight.

3. I’ll sleep later.

4. They’ll buy one soon.

5. We’ll leave a little later.

6. Maybe it’ll be better tomorrow.

(II). Complete the conversation. Use will or won’t

A: How are you going?

B: Well, I’m looking for a job in a hospital.

A: What kind of hospital job _________ you get?

B: Well, I know I _____________ be a secretary. I don’t know how to type.

Maybe I __________ be a nurse. I like helping people.

A: _________ you have the same job in five years?

B: No, I _____________.

A: What ___________ you do?

B: I __________ change jobs. I ___________ get a job in a hospital.

Keys:

will, won’t, will, Will, won’t, will, will, won’t

II、看图表,用more, less或fewer 完成练习。

Littleton, New York

In 100 years…

1. There will be ___________ houses.

2. There will be ___________ pollution.

3. There will be ___________ schools.

4. There will be ___________ people.

5. There will be ___________ snow.

6. There will be ___________ movie theaters.

Keys:

1. more

2.less

3. fewer

4. more

5. less

6. fewer

III、阅读练习

CATV

CATV is a short way saying “community antenna (公用天线) television”. But “cable television” is the name most people use. Cab le television allows viewers(观众) to receive TV

programs that they can not pick up with their ordinary antenna.

Television signals (信号) do not follow the curve(曲线) of the earth. They travel

in straight lines in all directions. Signals from a TV station move towards the

horizon(水平线) and then go into space. If you live only a few miles from a TV station, you may get a good picture on your set. But if you live more than 50 miles from a station, you may not get any pictures at all.

CATV began in 1948. People in places far from TV stations had to pay for putting up high antennas. A community antenna was usually placed on a hill, a mountain or on a high tower. The antenna picked up TV signals and fed them into a small local(当地的) station. From the station, thick wires called cable ran out to nearby homes. Each person using the cable paid a monthly charge(费用).

CATV worked well, and soon new uses were found for it. Local stations could feed programs into empty channels that were not in use. People along the cable could have local news, weather report, and farm and school news at no extra charge.

Today, cable television has moved into cities. It brings in extra programs that city viewers with ordinary antenna can not see. It is also used in many classrooms throughout the country.

根据短文内容,选择正确答案。

1. From the first paragraph we know that _____.

A. most people use cable television

B. “community antenna” is used for cable television

C. a community antenna is used for cable television

D. an ordinary antenna can not pick up TV programs

2. Of the following, which is not the way TV signals travel?

A. In a curve.

B. In a straight line.

C. In all directions.

D. Towards the horizon.

3. Cable TV is becoming more and more popular because _____.

A. it is free of charge

B. it provides all TV users good pictures

C. it only needs a bit of cable

D. it can provide more programs

4. On the whole, this passage is about ______.

A. how to put up high antennas

B. a way of picking up better TV programs

C. how to use the empty channels on your TV set

D. the way that TV signals are sent

5. From the passage we can infer (推测) that ______.

A. TV has begun to be used for educational purpose(目的)

B. viewers can receive more TV programs with their ordinary antennas

C. cable TV can not be used in small towns

D. antennas for cable TV are usually put up in the center of a community Keys: CADBA

(完整版)初三物理比热容知识点及相应练习

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( ) A.密度大B.比热容大C.质量大D.蒸发吸热

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2017年新目标英语八年级上教案(全册)

(此文档为word格式,下载后您可任意编辑修改!) Unit 1 Where did you go on vacation? Section A 1 (1a-2d) 一、教学目标: 1. 语言知识目标: 1) 能掌握以下单词:anyone, anywhere, wonderful, quite a few, most, something, nothing, everyone, of course, myself, yourself 能掌握以下句型: ①—Where did you go on vacation? —I went to the mountains. ②—Where did Tina to on vacation? —She went to the beach. ③—Did you go with anyone? —Yes, I did.No, I didn’t. 2) 能了解以下语法: —复合不定代词someone, anyone, something, anything等的用法。—yourself, myself等反身代词的用法。 3)一般过去时态的特殊疑问句,一般疑问句及其肯定、否定回答。 2. 情感态度价值观目标: 学会用一般过去时进行信息交流,培养学生的环保意识,热爱大自然。 二、教学重难点 1. 教学重点: 1) 用所学的功能语言交流假期去了什么旅行。 2) 掌握本课时出现的新词汇。 2. 教学难点: 1) 复合不定代词someone, anyone, something, anything等的用法。

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Unit 1 1.问题;事情matter 2.怎么了?出什么事了?What’s the matter? 3.疼痛的;酸痛的sore 4.感冒have a cold 5.胃痛;腹痛stomachache 6.胃痛have a stomachache 7.脚;足foot 8.颈;脖子neck 9.胃;腹部stomach 10.咽喉;喉咙throat 11.发烧fever 12.躺,平躺lie 13.躺下lie down 14.放松;休息rest 15.咳嗽cough 16.X射线;X光X-ray 17.牙痛toothache 18.量体温take one’s temperature 19.头痛headache 20.发烧have a fever 21.间歇;休息break

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最新人教版八年级下册数学知识点总结归纳

新人教版八年级下册数学知识点总结归纳期末总复习 一、 第十六章 二次根式 【知识回顾】 : 2.最简二次根式:必须同时满足下列条件: ⑴被开方数中不含 开方开的尽的因数或因式; ⑵被开方数中不含分母; ⑶分母中不 含根式。 3.同类二次根式: 二次根式化成最简二次根式后,若被开方数 相同,则这几个二次根式就是同类二次根式。 4.二次根式的性质: (1)(1)(a )2=a (a ≥0); (2) ==a a 2 5.二次根式的运算: (1)因式的外移和内移:如果被开方数中 有的因式能够开得尽方,那么,就可以用它的算术根代替而移到根号 外面;如果被开方数是代数和的形式,那么先解因式,?变形为积的 形式,再移因式到根号外面,反之也可以将根号外面的正因式平方后 移到根号里面. (2)二次根式的加减法:先把二次根式化成最简二 a (a >0) a -(a <0) 0 (a =0);

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比热容(基础) 知识讲解

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5、分析与论证: 相同质量的同种物质,升高相同的温度,吸热是 的; 相同质量的不同物质,升高相同的温度,吸热是 的。 6、评估、交流与合作 7、分析误差的原因 要点二、比热容(高清课堂《比热容、热量的计算》一、比热容) 一定质量的某种物质,在温度升高时所吸收的热量与它的质量和升高温度乘积之比,叫做物质的比热容。符号c ,单位为焦每千克摄氏度,符号为J/(㎏·℃)。 要点诠释: 1、比热容是物质本身的一种性质 (1)同种物质在同一状态下的比热容与其质量、吸收(或放出)热量的多少及温度的改变无关。 (2)同一种物质在不同的状态下比热容不同,如冰、水的比热容是不同的。 2、水的比热容比较大,是4.2×103J/(㎏·℃)。主要表现: (1)由于水的比热容较大,一定质量的水升高(或降低)一定的温度吸收(或放出)的热量较多,我们用水作为冷却剂和取暖用。 (2)由于水的比热容较大,一定质量的水吸收(或放出)较多的热量而自身的温度却改变不多,这一点有利于调节气候。夏天,太阳晒到海面上,海水的温度升高过程中吸收大量的热,所以人们住在海边并不觉得特别热;冬天,气温低了,海水由于温度降低而放出大量的热,使沿海气温降得不是太低,所以住在海边的人又不觉得特别冷。 要点三、热量的计算(高清课堂《比热容、热量的计算》二、热量的计算) 1、吸热公式:Q 吸=cm(t-t 0) 式中Q 吸表示物体吸收的热量,c 表示物质的比热容,m 表示物体的质量,t 0表示物体

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Unit 1What's the matter? Language Goals Learn to talk about health problems and accidents. Give

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热量比热容(基础)知识讲解

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人教新目标八年级下册英语课文文本(可打印)

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八下知识点汇总

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