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1、Unit 4 Then and now,Part A lets learn,Twenty years ago,six months ago,Tang dynasty,last year,last month,Now,dining hall,gym,grass,grasses,Twenty years ago,There was no gym in my school twenty years ago.,Now there is a new one in our school.,six months ago,now,Now there_many students in the school.,T
2、here _ no students in the school six months ago.,last year,My hair _ short last year.,now,Now my hair_ long.,last month,now,I _ heavy last month.,Now I _ thin.,There were no cinemas.,There were no post offices.,People went by bus.,People didnt go by bus.,People could use the Internet.,People couldnt
3、 use the Internet,People went by bike.,People didnt go by bike.,People could use the computers.,People couldnt use the computers.,1. I liked winter before. 改为否定句 _ 2.He couldnt swim last year. 改肯定句 _ 3. She dont like apples last month. 改错 _,dining hall grass gym 表示过去的时间 .years ago .months ago last year last month,last weekend last night last Monday yesterday the day before yesterday,Wlcome back 2017,
