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2020年春人教新目标英语八年级下册unit4知识点归纳总结

2020年春人教新目标英语八年级下册

Unit 4 Why don’t you talk to your parents?

一、重点短语

1. have free time有空闲时间

2. allow sb. to do sth. 允许某人做某事

3. hang out with sb. 与某人闲逛

4. after-school classes课外活动课

5. get into a fight with sb. 与某人吵架/打架

6. talk to sb. 与某人交谈

7. call sb. up打电话给某人8 look through翻看

9. be angry with sb. 生某人的气10. work out成功地发展;解决

11. get on with sb= get along with sb 与某人相处和睦

12. refuse to do sth. 拒绝做某事13. offer to do sth. 主动提出做某事

14. mind sb. doing sth. 介意某人做某事15. worry about sth. 担心某事

16. copy one’s homework抄袭某人的作业17. have a fight with sb. 与某人吵架

18. compete with sb. 与某人竞争19. free time activities业余活动

20. give one’ s opinion提出某人的观点21. cut out删除

二、重点语法

1.Why don’t you talk to your parents? 你为什么不和你打父母谈谈呢？

【解析】Why don't you do sth ?= Why not do sth? 为什么不......呢？

【拓展】用于提建议的句型有：

(1)What about doing sth ?=How about doing sth? ….怎么样？

(2)Why don’t you do sth?= Why not do sth? 为什么不呢？

(3)Let’s do sth.让我们一起做某事吧。

(4)Shall we/I do sth?我们做…好吗？

(5)had better do/not do sth 最好做/不做某事

(6) Will/Would you please do sth 请你做…好吗？

(7) Would you like to do sth? 你想去做某事吗？

(8)Would you mind doing sth？你介意做某事吗？

【回答】

(1). 同意对方的建议时，一般用：

◆Good idea./ That’s good idea. 好主意

◆OK/ All right./ Great 好/ 行/太好了

◆Yes, please ./ I’d love to 是的/ 我愿意

◆I agree with you 我同意你的看法

◆No problem 没问题

◆Sure/ Of course/ Certainly 当然可以

◆Yes, I think so 对，我也这样想

(2).对对方的帮助或要求表示委婉谢绝时，一般用：

◆I don’t think so 我认为不是这样

◆Sorry, I can’t 对不起，我不能

◆I’d love to, but…

◆I’m afraid…我愿意，但恐怕……

练习：1).— Why not go to Lao She Teahouse tonight? — ______.

A. It doesn't matter

B. Thank you

C. Sorry to hear that

D. Sounds great

2).—I feel really tired. —______

A. Lucky you!

B. You’d better work harder.

C. Congratulations!

D. Why not go and have a rest?

3). —It’s a nice day, isn’t it?—Yes. ______ going hiking and relax ourselves?

A. Why not

B. Why don’t

C. What about

2.My parents don’t allow m e to hang out with my friends. 我的父母不允许我和我的朋友们出去闲逛。【解析】allow sb. to do sth 允许某人做某事

【拓展】allow v 允许

allow doing sth 允许做某事They don’t allow smoking.

allow sb. to do sth 允许某人做某事My mother allows me to watch TV.

be allowed to do sth 被允许做某事

①We don’t allow ___________(smoke) in the reading room.

②Our teacher allows us ____________(go) out for a walk.

③We won’t allow ________in the cinema .But you are allowed ______in the rest room.(smoke)

【拓展】allow与let的辨析：

allow指“允许”，表示“默许，听任，不加阻止”，

allow sb to do sth允许某人做某事。

let指“让”，let sb do sth让某人做某事，语意较弱，多用于口语中，let不能用于被动语态。

3. Yes, but I’m still angry with her. 是的，但是我仍然很生她的气。

【解析】be angry with sb. 生某人的气

【拓展】angry adj. 生气的→ angrily adv. 生气地

(1)be angry with sb. =be mad at sb. 对某人生气(2)be angry at/about sth对某事感到生气

(3)be angry to do sth 做某事感到生气

My father was very __________(对……生气)his computer. He hit the computer _______(angry)

4. Hope things work out. 希望事情顺利解决。

【解析1】hope v 希望

hope to do sth I hope to visit Guilin.

hope + that 从句（表示希望）I hope that you’ll be better soon

wish v 希望wish to do sth I wish to visit Guilin.

wish sb.to do sth 希望某人做某事I wish you to go.

wish +that 从句表示愿望，从句用虚拟语气I wish I were you.

5.When they argue, it’s like a big, black cloud hanging over our home.

【解析1】argue 争吵→argument n 争论have an argument with sb.与某人辩论

argue with sb. 与某人争吵argue with sb. about sth 为某事与某人争吵argue about sth 争论某事argue against 争辩；反对He argued against the plan

6.Also, my elder brother is not very nice to me.

【解析1】elder adj.年纪较长的His elder brother is ill.

My ______brother is 7 years older than my younger sister.

【解析2】be nice to sb. 对某人友好= be friendly to sb. = be good to sb.

7.Instead he watches whatever he wants until late at night.

【解析1】instead 代替，反而，替

(1) instead 副词，代替，常放在句首或句尾,表示前面的事情没做，而做了后面的事情。

Lee was ill so I went instead.李病了，所以我去了。

(2) instead of +n/doing 代替，而不是，放在句中

She wrote to him instead of calling him.=She didn’t call him. She wrote to him instead.

( ) Health is very important to us. We should eat more vegetables and fruit _____ rich food.

A. instead

B. instead of

C. because of

D. because

( ) We’ve got no coffee. Let’s have tea _______.

A. either

B. however

C. yet

D. instead

8.You should explain that you don’t mind him watching TV all the time.

【解析】explain 解释；说明→ explanation n 解释；说明

explain sth to sb. 向某人解释某事explain to sb sth给某人解释某事

Mr. Wu always spends a lot of time __________(解释) things to us.

9.I have to compete with my classmates at school.

【解析】compete v竞争；对抗→ competition n 竞争

compete with sb. 和某人竞争compete against/ with 与……竞争compete for 为……参加比赛We are ready for the coming ________________(compete).

10.Who gives their opinions about the problem?

【解析】opinion n 意见；想法；看法in one’s opinion 以某人的观点；在某人看来give opinions about sth. 给出关于某事的观点。

11.The Taylors are a typical American family.泰勒一家是一个典型的美国之家。

【解析】The Taylors 泰勒一家在姓氏的复数前加冠词the表示“全家人或夫妻两人”，使用时注意主语和谓语保持一致。The Blacks are getting ready for the holiday.

typical 典型的be typical of “是……的特点”

12. Maybe I could cut out a few of their activities, but I believe these activities are important for my children’s future.

【解析】cut out 删除；删去You’d better cut out that sentence.

cut up 切碎cut down 砍到cut in 插队cut off 切断（水、电）供应

( ) Don’t ___ when others talk; it’s impolite. A. cut out B. cut in C. cut down D. cut off 13. I really want them to be successful.

【解析】successful 成功的

拓展succeed v 成功，达到→success n 成功→successful adj 成功的→successfully adv成功地◆succeed in doing sth

①If at first you d on’t ____________(success) . try, try again.

②She works very hard ,so she will ____ in ____ the exam.

A. successful; pass

B. success ;passing

C. succeed; passing

D. successful; passing

14.It’s time for homework.该写作业了。

【解析】It’s time for sth 是到做某事的时候了It’s time for lunch.

It’s time to do sth是到做某事的时候了It’s time to go to school.

15.Mothers send their small kids to all kinds of classes.

【解析1】send→ sent → sent v 发送

【短语】：send away 赶走send for 派人去请send off 寄出send out 分发send up 发射send sb. sth = send sth to sb. 送给某人某物

( ) 1.You fill in both parts of the form, then_____.

A. send up it

B. send for it

C. send it away

D. send it off

( ) 2.Please send a photo of your family ____ me. A. for B. at C. to D. with 【解析2】all kinds of 各种各样的

【拓展】kind

(1) n 种类

kind of +adj.有点，有几分，kind of cold 有点冷

a kind of 一种的，某种的all kinds of 各种各样的

different kinds of 不同种类的What kind of…?那种

(2) adj. 友好的be kind to sb. = be good to sb.=be friendly to sb. 对某人友好

16.And they are always comparing them with other children.

【解析】compare A with B 将A和B 比较

(1)compare…with… 把……与…..做比较

(2) compare…to… 把…..比做……

( ) ①. People often compare a teacher a candle.

A. to

B. into

C. as

D. with

( ) ②. It’s necessary English Chinese in English study.

A. compare ; to

B. to compare ; with

C. comparing ; to

D. to compare; into

17. keep on happening 持续发生

【解析】keep on doing 继续做某事keep sb. doing sth 让某人一直做某事keep up with 跟上keep sb. from doing sth阻止某人做某事keep away from避开

Mr. Li kept _________(work) here for nearly 30 years.

Unit4 基础知识练习

一、.句型转换

1.Why don’t you ask your teacher for help?（改为同义句）

ask your teacher for help?

2.It’s time for breakfast.（改为同义句）It’s time.

3.He would like to offer us some help.（改为同义句）

He would like to some help us.

4.I think he should tell the news to his father.（改为否定句）

I tell the news to his father.

5.These fans arrived very early. They could see their favorite stars.（合并成一个句子）

These fans arrived very early they could see their favorite stars.

用方框中所给单词的适当形式填空

sound nice write friend feel you like need help how

how great you are, there are six ways to make you 6 good about yourself.

(1)Look in the mirror (镜子) and say to 7 ,“I’m a special person and there’s no one in the world

8 me. I can do anything!”It may not 9 so good, but it really works!

(2)Do something 10 for someone. 11 others always makes you feel good.

(3)Smile! Be 12 to people you meet. Look for the good things in your friends and family.

(4)Learn something new! Have you always wanted to decorate your own room or learn 13 to

swim? Go for it! New challenges (挑战) are fun and give you a sense of accomplishment when you have finished.

(5) Read and start a diary. Turn off the TV and let your imagination(想象) fly! If you have any

thoughts, dreams or anything you want, 14 them down! Writing always helps to express your feelings.

(6) Stay with your family. We all 15 our family time. Talk with your Mum and Dad or maybe

even your cousin.

6. 7. 8. 9. 10.

11. 12. 13. 14. 15.

三.单项填空

( )16.His father doesn’t allow him swimming alone.

A.goes

B.to go

C.going

D.go

( )17.What’s with you?

A.wrong

B.the wrong

C.matter

D.up

( )18. give him a watch?

A.What about

B.Let’s

C.Why don’t

D.Why don’t you

( )19.You could save some money you can buy a gift for your mother.

A.in order to

B.because

C.so

D.so that

( )20.I think the result must him very much.

A.surprise

B.surprised

C.surprising

D.surprises

( )21. he is very poor, he feels very happy.

A.Although；but

B.Although；/

C.Because；so

D.Because；/

( )22.This math question is too difficult. Can you help me ?

A.work on it

B.work out it

C.work it out

D.work for it

( )23.He has two sons. They are Jim and Tom. Jim is Tom’s brother.

A.old

B.older

C.elder

D.young

( )24.The old man looks very unhappy, because he lives ,and he feels very .

A.alone；alone

B.lonely；lonely

C.alone；lonely

D.lonely；alone

( )25.He should the teacher.

A.explain

B.explain to

C.explained

D.explained to

( )26.—What’s wrong?

—I can’t do my homework now. I my homework in the classroom this morning.

A.leave

B.forget

C.forgot

D.left

( )27.I’m not sure. His father in the office.

A.maybe

B.may be

C.may

D.is

( )28.He is very angry with his mother, because his mother always him with the best student.

https://www.sodocs.net/doc/fe18600624.html,pares

https://www.sodocs.net/doc/fe18600624.html,plains

C.tells

D.makes

( )29.It is too loud.Please the radio.

A.turn on

B.turn off

C.turn down

D.turn up

Unit4

一.1.Why not 2.to have breakfast 3.offer；to

4.don’t think he should

5.so that

二.6.feel make sb. do sth.让某人做某事。

7.yourself say to oneself为固定短语，意为“自言自语”。

8.like 9.sound 10.nice something nice意为“好事”。

11.Helping 12.friendly be friendly to sb.“对某人友好”。

13.how learn how to swim意为“学习如何游泳”。

14.write write...down“把……写下来”。15.need

三.16.B allow sb. to do sth.“允许某人做某事”。

17.A 18.D 19.D 20.A surprise sb.意为“使某人惊讶”,

21.B 22.C 23.C elder brother意为“哥哥”。

24.C a lone作形容词，而lonely既可以作形容词，又可以作副词，表示人的一种心理状态。

25.B explain to sb.“向某人解释”。

26.D f orget sth.意为“忘记某事”；leave sth.则表示“把某物留在或忘在某地”。由句中的时间状

语this morning可知该句时态用一般过去时

27.B m ay表示推测，与后面的be构成谓语；而maybe是副词，常用于句首。

28A 29C

新人教版数学八年级下册知识点归纳

八年级下册知识点归纳第十六章二次根式 1、二次根式: 形如的式子。①二次根式必须满足:含有二次根号“”;被开方数a必须就是非负数。②非负性 2、最简二次根式:满足:①被开方数不含分母;②被开方数中不含能开得尽方的因数或因式的二次根式。 3、化最简二次根式的方法与步骤: (1)如果被开方数含分母,先利用商的算数平方根的性质把它写成分式的形式,然后利用分母有理化进行化简。 (2)如果被开方数含能开得尽方的因数或因式,先将她们分解因数或因式,然后把能开得尽方的因数或因式开出来。 3、二次根式有关公式 (1) (2) (3)乘法公式 (4)除法公式 4、二次根式的加减法则:先将二次根式化为最简二次根式,再将被开方数相同的二次根式进行合并。 5、二次根式混合运算顺序:先乘方,再乘除,最后加减,有括号的先算括号里的。第十七章勾股定理 1、勾股定理:如果直角三角形的两直角边长分别为a,b,斜边长为c,那么a2＋b2=c2。 2、勾股定理逆定理:如果三角形三边长a,b,c满足a2＋b2=c2。,那么这个三角形就是直角三角形。 3、互逆命题:题设、结论正好相反的两个命题。如果把其中一个叫做原命题,那么另一个叫做它的逆命题。(例:勾股定理与勾股定理逆定理) 4、直角三角形的性质 (1)直角三角形的两个锐角互余。° (2)在直角三角形中,30的角所对的直角边等于斜边的一半。

(3)如果直角三角形的两直角边长分别为a,b,斜边长为c,那么 a2＋b2=c2。 (4)、直角三角形斜边上的中线等于斜边的一半 5、摄影定理:在直角三角形中,斜边上的高线就是两直角边在斜边上的摄影的比例中项,每条直角边就是它们在斜边上的摄影与斜边的比例中项。① ②③ 6、常用关系式由三角形面积公式可得:AB CD=ACBC 第十八章平行四边形 1、平行四边形定义:有两组对边分别平行的四边形叫做平行四边形。 2、平行四边形的性质:⑴平行四边形的对边相等;⑵平行四边形的对角相等:⑶平行四边形的对角线互相平分。 3平行四边形的判定:⑴、两组对边分别相等的四边形就是平行四边形; ⑵对角线互相平分的四边形就是平行四边形;⑶两组对角分别相等的四边形就是平行四边形; ⑷一组对边平行且相等的四边形就是平行四边形。 4、矩形的定义:有一个角就是直角的平行四边形。 5、矩形的性质:⑴矩形的四个角都就是直角; ⑵矩形的对角线相等。 6、矩形判定定理:⑴有三个角就是直角的四边形就是矩形; ⑵对角线相等的平行四边形就是矩形。 7、中位线定理:三角形的中位线平行于三角形的第三边,且等于第三边的一半。直角三角形斜边上的中线等于斜边的一半。 (连接三角形两边中点的线段叫做三角形的中位线。) 8、菱形的定义 :有一组邻边相等的平行四边形。 9、菱形的性质:⑴菱形的四条边都相等; ⑵菱形的两条对角线互相垂直,并且每一条对角线平分一组对角。 S菱形=1/2×ab(a、b为两条对角线长) 10、菱形的判定定理:⑴四条边相等的四边形就是菱形。 ⑵对角线互相垂直的平行四边形就是菱形。

新人教版八年级英语下册各知识点归纳总结

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