Unit 4 Then and now单元知识点精心整理

一、语音: 字母组合er的发音

/ ? / mother teacher worker sister summer winter /?: / her hers 二、单词 昨天 yesterday 电话 telephone 使用 use 电子书e-book 网友 e-friend 拼写 spell 三、词组

1.过去和现在 then and now 3.不会写字 could not write 5.等待回答 wait for the anser 7.一部手机 a mobile phone 9.写电子邮件 write emails 11.迈克的爷爷 Mike?s grandpa 13. 全世界 all over the world 15.全世界 all over the world 17.贴两张照片 stick two photos 19.每天努力工work hard every day 21.你记住吗do you remember 23.我的表弟 my cousin 25.在度假 on holiday 27.这些单词these words 29.继续 go on

31.听收音机listen to the radio 33.变得生气 get angry 35.一岁 one year old 37.三岁 three years old 39.朝??外看 look out of

2.读报得到新闻read newspapers for news 4.做很多事情 do many things

6.写信给他的朋友们 write letters to his friends 8.随处给人打电话 call people anywhere 10.三十年前 thirty years ago 12.听收音机 listen to the radio 14.看电子书 read e-books

16.在学校交朋友 make friends at school 18.阅读和观看新闻 read and watch news 20.从商店里买东西 buy things from shops 22.发明飞机/火车 invent the aeroplane /train 24.在网上购物/网购 do shopping on the Internet 26.英国人 the British/the Englishmen

28.用“鸡蛋”造一个句子make a sentence with ?egg? 30.朝窗外看 look out of the window 32.等待答案 wait for the answer

34.用电话机给人打电话 use the telephone to call people 36.贴一张你自己的照片 stick a photo of yourself 38.复习一般过去时 review the simple past tense 40. 购物 do shopping

粘stick 发明invent 飞机aeroplane 狐狸fox 生气anger

你自己yourself

??以前 ago 随处，到处 anywhere 办公室 office 移动电话，手机mobile phone 收音机 radio 报纸 (可数名词) newspaper 也also 新闻(不可数) news 仍然 still 答案，回答answer 信letter 记住remember

41. 家里和办公室的电话机 the telephone at home and in the office 42. 来自世界各地的网友 e-friends from all over the world

43. 美国人（复数） the Americans (口诀：中日不变，英法变，其余+s) 44.比较过去时和现在时/抚今追昔 compare the past with the present

四、句子

1. What day is today?=What day is it today? 今天是星期几？ 2. Can you spell it ? 你会拼写它吗？ 3. Where?s the ?egg? ? “鸡蛋”在哪儿？

4. He also writes emails.= He writes emails, too . 他也写电子邮件。

5. Six years ago, Mike could read and draw, but he could not write. 六年前, 迈克会读书画画, 但他不会写字。

6. Twenty years ago, Mr Brown wrote letters to his friends. 二十年前, 布朗先生写信给他的朋友们。

7. Now he has a mobile phone and he can call people anywhere. 现在, 他有了手机, 能在任何地方给人们打电话。

8. Thirty years ago, Mike?s grandpa listened to the radio and read newspapers for news. 三十年前，迈克的爷爷通过听收音机、看报纸获得新闻。

9. Twenty years ago, Mrs Brown made friends at school. 二十年前，布朗夫人在学校交朋友。 10. She does shopping on the Internet too. 她也在网上购物。 11. Bobby is looking out of the window. 波比朝窗外看。 12. The lesson goes on. 现在继续上课。 五、语法

1. could引导的一般过去时的否定句，在could之后加not ：could not=couldn?t

He could send emails four years ago.（改为否定句）→ He couldn?t send emails four years ago. 2. could引导的一般过去时的一般疑问句，将could调至句首： Mike could read and draw six years ago.（改一般疑问句） → Could Mike read or draw six years ago?

3. could引导的特殊疑问句：特殊疑问词 + could引导的一般疑问句：

They could ride a bike.（对画线部分提问）→ Could they ride a bike ？(用do what替换) → What could they do？ 4. 一般过去时和一般现在时的动词形式对比：时间决定时态

根据句中时间副词的不同，使用不同的动词形式（动词原形、三单和动词过去时） Unit4中出现的动词总结如下： 动词原形 read write use have watch buy fly 三单形式 reads writes uses has watches buys flies 过去时 read wrote used had watched bought flew 动词原形 draw do call listen make eat get 三单形式 draws does calls listens makes eats gets 过去时 drew did called listened made ate got go work look wait goes works looks waits went worked looked waited take invent talk ride takes invents talks rides took invented talked rode 5. 有关今昔对比作文的写法： 句型：（1）?years ago （2）?now? （3）This was me years ago, I was .

（4）I could I couldn?t （5）Now, I .

6. 有关某国人复数的表示

口诀：中日不变，英法变，其余+s \某国人\的复数有三种类型：

(1) Chinese, Japanese：单、复数同形，不需加s （还有 Swiss瑞士人）

(2) Englishman, Frenchman复数要把man 变为men（Dutchman（荷兰人）也是） (3) 其他各国人以 –an , -ian收尾的均直接加s如：Americans, Australians, Germans等 7. 有关动词过去式的变化： 不规则动词有：（Unit4新增4个） Unit4 写 write 阅读 read 制造 make 买 buy 规则动词有：（新增3个） Unit4 听 listen 发明 invent 使用 use 8. 介词的用法：

in the office at home，

listen to the radio read newspapers for news on the Internet buy things from shops make friends at school from all over the world on holiday look out of the window go on make a sentence with ?egg? wait for the answer stick a photo of yourself compare the past with the present 9. 不定冠词an构成的短语:

an email, an e-book, an e-friend, an English lesson, an egg.

可以补充：an American, an answer, an angry teacher, an aeroplane,

listened invented used wrote read made bought