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1、Unit 4,Then and now,Introduce,be(是)-was,were become(变成)-became bring(带来)-broughtbuild(建筑)-built buy(买)-bought can(能)-couldcome(来)-came do(做)-did fly(飞)-flewgo(去)-went have(有)-had lose(丢失)-lostread(读)-read run(跑)-ran say(说)-saidsee(看见)-saw take(拿到)-took tell(讲述)-told,动词过去式不规则变化总结:,Words,名词,表示“电话”。,常用
2、短语：use the telephone 使用电话 on the phone 在打电话,eg：Why not just use the telephone?为什么不直接使用电话？,小练习：（）te _ _ ph _ ne A.el;i B.le;o,B,telephone,/telfn/,Words,名词,表示“办公室”。,常用短语：in the office 在办公室 near the office 在办公室旁边,eg：There is a post office near the supermarket.在超市附近有个邮局。,小练习：worked,in,he,office,the,yest
3、erday._,He worked in the office yesterday.,office,/fs/,Words,名词,表示“手机、移动电话”。,常用短语：a mobile phone 一部移动电话,eg：There is something wrong with his mobile phone.他的手机出了点问题。,小练习：现在几乎每个人都有一部电话。_,Now almost everyone has a mobile phone.,mobile phone,Expressions,ago指的是从现在起到过去时间的某一点的一段时间。,Twenty years ago,she bou
4、ght things from shops.,20年前,她从商店里买东西。,eg：Five years ago，we visited Yunnan.五年以前,我们参观了云南。,小练习:He wants _(bring)some English books to school.They _(see)many beautiful birds last week.,brought,saw,Expressions,某段时间+ago表示前,一般过去时的常见的时间状语。,Twenty years ago.,20年前。,eg:Little Tom was born five years ago.Now he
5、 is five years old.Little Tom五年前出生,现在他五岁了。,小练习:Liu Tao could read when he was young.(改为否定句)_ Now Mrs Green has a telephone.(对画线部分提问)_,Liu Tao couldnt read when he was young.,What does Mrs Green have now?,Dialogues,Retelling the text!,Expand,(一)规则动词的过去式,一般过去时的构成,1.一般情况下,在动词原形后面加-ed。look looked play p
6、layed start started visit visited,2.以不发音e结尾的动词,在词尾直接加-d。live lived use used,Expand,(一)规则动词的过去式,一般过去时的构成,3.以“辅音字母+y”结尾的动词,先将 y 改为i,再加 ed。study studied try tried fly flied,4.以重读闭音节（即辅音元音辅音）或r音节结尾,末尾只有一个辅音字母的动词,要先双写这个辅音字母后,再加 ed。stop stopped plan planned prefer preferred,Expand,(二)不规则动词的过去式,一般过去时的构成,1.
7、改变动词中的元音begin begandrink drankknow knew,2.变词尾的d 为tbuild built lend lent send sent,Expand,(二)不规则动词的过去式,一般过去时的构成,3.与动词原形一样cut cut put put cost cost,4.变-ay 为-aid(少数动词)say said pay paidlay laid,Expand,(二)不规则动词的过去式,一般过去时的构成,5.采用不同词根:sell sold teach taughtbuy bought,6.其他am/is was are werehave/has had,Summ
8、ary,telephone office mobile phone,ago,Exercise,1.-Did you like the film?-_.A.Yes,it was interesting.B.Yes,I was.C.No,I dont.2._ there _ trees on the farm now?A.Were,any B.Are,some C.Are,any,A,A,Exercise,3.There _ a mobile phone on the desk.A.are B.were C.was 4.Do you like _ piano?A.play B.playing C.playing the,C,C,Exercise,5.Yang Ling and his friend _ to music last week.A.didnt listened B.didnt listen C.doesnt listen6.I often _ flowers in the morning.A.waters B.water C.watered,B,A,
