1、Unit 4 Then and now Introduce be(是)-was, were become(变成)-became bring (带来)- brought build(建筑)- built buy (买)- bought can(能) - could come(来)- came do(做) - did fly (飞)-flew go (去)- went have ( 有)- had lose (丢失)- lost read (读)-read run(跑)- ran say (说)- said see (看见)- saw take (拿到)- took tell (讲述)- told
2、 动词过去式不规则变化总结: Words 名词,表示“电话”。 常用短语：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 supermar
3、ket . 在超市附近有个邮局。 小练习： worked, in, he , office, the, yesterday. _ 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 E
4、xpressions 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 bought 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
5、状语。 Twenty years ago. 20年前。 eg : Little Tom was born five years ago. Now he 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 Retel
6、ling the text! Expand (一)觃则动词的过去式 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 played 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)觃则动词的过去式 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）戒r音节结尾,末尾只有一个 辅音字母的动词,要先双写这
7、个辅音字母后,再加 ed。 stop stopped plan planned prefer preferred Expand (二)不觃则动词的过去式 一般过去时的构成 1.改变动词中的元音 begin began drink drank know knew 2.变词尾的d 为t build built lend lent send sent Expand (二)不觃则动词的过去式 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 paid lay laid Expand (二)不觃则动
8、词的过去式 一般过去时的构成 5.采用不同词根: sell sold teach taught buy bought 6.其他 am/is was are were have/has had Summary 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, so
9、me 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 listen 6.I often _ flowers in the morning. A
10、. waters B. water C. watered B A Homework Write a passage titled “ years ago”. 一般疑问句 Did you catch any fish ? Yes, I did . 句型结构 Did +主语+动词原形+其它 ？ Yes，主语+did. No, 主语+ didnt . 特殊疑问句 What did you do there ? How was your holiday , Mike ? We went to the Bound . It was fun. 句型结构 特殊疑问词+一般疑问句+？ 主语+动词过去式觃则 与不觃则变化 。
