1、Unit4 Then and nowLets check Story time Many years ago,I went to this school.I went to school by bike.I loved cycling.Nowadadys,many students go by bus or car.We didnt have computer games then or computers.So we often played badminton in the summer and ice-skating in the winter.We had a great time.A
2、fter school,I often went to the park and read under a tree.It was so beautiful there.eat raw meat吃生肉做饭cook their foodhelp you cookhouse robots帮你做饭家务机器人wash the dishes洗碗洗盘子cook their meat煮肉do the dishes洗碗洗盘子many clean riversmore and more buildingshelp the earthDont worry!How beautiful the world was!l
3、ive on the earth住在地球上住在大海里live in the seahave a bright futureheal the world有广阔的前景拯救世界Make it a better place!让它变成更好的世界！eatmeetdishesmorehumansliveseehad1.ate（原形）_ 2.meat(同音词)_3.dish（复数）_ 4.many（比较级）_5.human(过去式)_ 6.lived(原形)_7.sea(同音词)_ 8.have(过去式)_9.better(原级)_ 10.caveman(复数)_ P41goodcavemenI.They c
4、ooked their food.(否定句）2.There were many trees.(一般疑问句）3.We should help the earth.(一般疑问句）4.Whales lived in the sea.(否定句）They didnt cook their food.Were there many trees?Should you help the earth?Whales didnt live in the sea.Try your best!It was an egg.Now it is a hen.It was raining.Now it is sunny.Che
5、n Jie was short.Now she is 1.5 metres tall.In summer,the tree was green.Now it is yellow.There was a building before.Now it is a park.The cat was on the chair.Now it is under the chair.3.结构1.概念2.时间主语+动词的过去式+其它yesterday(morning)last(year,week,night,month)in 1990(过去的年)two days agothe day before yester
6、dayjust now=a moment agonowpastfuture表示过去某个时间发生的动作或存在的状态一.规则动词 look looked1）一般在动词原形末尾加 ed play played start started2）结尾是 e 的动词只加-d live lived hope hoped use used3）末尾只有一个辅音字母的重读闭音节词，先双写这个辅音字母，再加edstop stoppedplan plannedtrip tripped4）结尾是“辅音字母+y”的词，先变“y”为“i”再加edstudy studiedcarry carried含有 be 动词的句型 一般
7、过去时表示过去时间内某人某物存在的状态，性质等eg:I was a teacher last year.She(He)was a singer.WeYou were happy.They 一般现在时表示某人某物现在的状态，性质等eg:I am a teacher now.She(He)is a singer.We They are happy.You不含 be 动词的句型 一般现在时用来表示习惯性，经常性发生的动作主语动词原形其它主语(单三)动词现在式(+s)其它eg:1）I go to work by bus everyday2）you watch TV everynight.3）we pl
8、ay basketball on the weekends.4）They have lessons everymoring.一般过去时用来表示在过去的时间里发生的动作主语动词过去式（+ed)其它eg:1）I went to work by bus yesterday.2）you watched TV last night.3）We played basketball last weekend.4）They had lessons two days ago.1)She _ (be)our English teacher.2)Tom and Nike _ (be)my classmates.3)I
9、 _ (be)a student.4)You _ (be)a lovely girl.5)They _ (be)my parents.6)They _(be)farmers two years ago.7)Mike _(be)a baby long long ago.8)We _(be)at home last night.isareamarearewerewerewas2.用动词的适当形式填空10)He here yesterday.(be)11)I up at 6:00 yesterday morning.(get)12)you a good time last Sunday?(have)
10、wasgotDid have13)My father often to work by bus last year.(go)14)I often to pop music 3 years ago.(listen)15)He usually in the pool in 2002.(swim)wentlistenedswam16)I _(be)ill last Sunday.17)Amy _(sit)here yesterday.18)_ you _(clean)your room just now.wassatDid clean27)He _(be)here a moment ago.19)M
11、y sister _(be)born on June 5.1996.20)_(be)your parents at home just now?21)He _(study)French here last year.22)She _(do)homework last night.23)They _(go)to the zoo yesterday morning.24)We _(have)a party last Saturday.26)They _(live)here two years ago.25)Joy _(visit)me yesterday evening.wasWere studieddidwenthadvisitedlivedwas
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