Unit4知识点.docx

Unit4 Then and now知识点归纳一、 重点词组1过去和现在 then and now 2.六年前six years ago3.做许多事 do many things 4.写信给他的朋友 write letters to his friends5.使用电话 use the telephone 6.在家 at home7.在办公室 in the office 8.打电话给别人 call people9.有一部手机 have a mobile phone 10.写电子邮件 write emails11.听收音机 listen to the radio 12.读报纸 read newspapers13.看新闻 watch news 14.在网上 on the Internet15.读电子书 read e-books 16.在学校交朋友 make friends at school17.从商店里买东西 buy things from shops18.全世界 all over the world 19.在度假 on holiday20.努力工作 work hard 21. 我的堂弟 my cousin22.每一天 every day 23.向窗外看 look out of the window24.听我说 listen to me 25.继续 go on26.变得生气get angry 27.用造句 make a sentence with28等待答案 wait for the answer二、 主要知识点1本单元出现的一些介词的用法写给 write to 使用做 use to听 listen to 在网上 on the Internet在度假 on holiday 从商店里 from shops向窗外看 look out of the window等待 wait for 用 make a sentence with “egg”2祈使句Listen to the radio. 否定句 Dont listen to the radio.Make a sentence with“egg”. Dont make a sentence with “egg”.Please look out of the window. Please dont look out of the window.Sam, read the word. Sam, dont read the word.3. 一般过去时情态动词的句型转换： (1)could 引导的一般过去时的否定句，在 could 之后加 not：could not=couldnt Six years ago, I could write.(否定句) Six years ago, I couldnt write. (2)could 引导的一般过去时的一般问句，将 could 调至句首： Mike could read and draw.(一般问句) Could Mike read or draw?(3)could 引导的特殊问句：特殊疑问句+could They could ride a bike.(对画线部分提问) 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。一般过去时，动词用过去式； 一般现在时，主语是第三人称单数(he,she,it ,xx)动词用“三单”形式； 主语不是第三人称单数，动词用原形。动词原形 read write use have watch buy fly go draw do call listen make eat get take三单形式 reads writes uses has watches buys flies goes draws does calls listens makes eats gets takes过去时 read wrote used had watched bought flew went drew did called listened made ate got took动词第三人称单数的改法：(1)一般情况加 s， (2)以s, x, sh, ch结尾 的加 es : washes, watches, (3)辅音字母加y 结尾的，去y 加ies: study studies, fly- flies5.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 国人单数复数同形，不需加 s。 2） Englishman, Frenchman 复数要把 man 变为 men。3） 其他各国人以an, -ian 收尾的均直接加 s。如：Americans, Australians,，Germans 等。6.同义句(1) He also writes emails.= He writes emails too. (2) What day is today?=What day is it today?7不定冠词 an 构成的短语: an e