When our grandparents were youngWhen our grandparents were youngPart EChapter 3Lets learn.wear trainers运动鞋运动鞋 trenzLets learn.use credit cards（信用卡）Lets learn.have a telephone（）Lets learn.listen to the radio（收音机）Lets learn.shop at supermarkets(超市超市)su:pm:ktLets learn.运动鞋运动鞋 超市超市空调空调 口香糖口香糖 收音机收音机信用卡信用卡Lets learn.口香糖口香糖超市超市 空调空调信用卡信用卡运动鞋运动鞋 收音机收音机 Lets learn.表示表示过去过去的时间的时间 Past tenseago 2 days ago,a year ago,beforelast last Christmas,last year,when when I was young,when he was youngyesterday the day before yesterday 前天前天Lets learn.Past tense-Did you play football yesterday?-No,I didnt.-Did you eat out last Sunday?-Yes,I did.-Did you go to school six years ago?-No,I didnt.Lets learn.-Did you play marbles when you were young?-Yes,I did.-Did you play hopscotch when you were young?-No,I didnt.Time machine.Lets learn.When we were young2018Lets learn.-Did you _ fifty years ago?Yes,I did.wear trainersLets learn.credit cardsDid you_?No,I didnt.There _ not_ credit cards.wereanywerentuse credit cardsLets learn.Grammar ExpertThere werent any+复数名词：apples,computers,mobile phonesThere wasnt any+不可数名词(un.)：milk,cola,orange juice,chewing gumThere werent any_100 years ago in China.There wasnt any_100 years ago in China.Lets learn.Did you _ a telephone?No,I didnt.Rich people _ telephones at home but poor people didnt.havehad(didnt have any telephones at home)Lets learn.TV quiz showHow much do you know about your grandpa?Lets practice.TV quiz show-Did you wear trainers fifty years ago?-Yes,I did.-Did you use credit cards?-No,I didnt.There werent any credit cards.-Did you have a telephone?-No,I didnt.Rich people had telephones at home but poor people didnt.Lets learn.listen to the radioshop at supermarketsno supermarket fifty years agogo to school(rich children)(poor children)Lets learn.Did you _?Yes,_._you _?_.There_you _?_.Rich children _ to school but poor children _.listen to the radioI didDidshop at supermarketsNo,I didntwerent any supermarkets.Didgo to schoolNo,I didntwent didntLets practice.Lets learn./no /noLets learn.Hi,Did you?Did you?Did you?Yes,INo,I No,There werent(wasnt)No,I RichPoorHi,Grandma.It isplay computer gamesdrink milkeat outNote-taking did/didnt+v.原形原形 was+不可数不可数/可数单数可数单数 were+可数可数复数复数 some 肯肯 any 否否/疑疑+不可数/可数复数一些Note-taking.1.wear trainers 穿运动鞋穿运动鞋 2.use credit cards 使用信用卡使用信用卡3.have a telephone 有一部有一部4.listen to the radio 听收音机听收音机；听广播听广播5.shop at supermarkets 在超市购物在超市购物 6.go to school 去去上学上学7.rich 富有的富有的8.poor 贫穷的贫穷的；可怜的可怜的9.people 人们（复数）人们（复数）10.children 孩子们（复数）孩子们（复数）child孩子单数孩子单数11.check 检查检查12.Its time to ask your grandpa.该问你爷爷该问你爷爷的时间到了的时间到了。
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