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1、Unit 4 Then and now,Part B read and write,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 g
2、reat time. After school, I often went to the park and read under a tree. It was so beautiful there.,1,2,3,Story time,eat raw meat,吃生肉,做饭,cook their food,help you cook,house 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 rivers,more and more buildings,help t
3、he earth,Dont worry!,How beautiful the world was!,live on the earth,住在地球上,住在大海里,live in the sea,have a bright future,heal 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！,eat,meet,dishes,more,humans,live,see,had,1.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
4、)_ 7. sea(同音词) _ 8. have(过去式)_ 9. better(原级) _ 10. caveman(复数)_,P41,good,cavemen,I . They cooked 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?,W
5、hales didnt live in the sea.,Try your best!,It was an egg. Now it is a hen.,It was raining. Now it is sunny.,Chen 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 c
6、hair.,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 ago the day before yesterday just now = a moment ago,now,past,future,一.一般过去时的概念,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 looked 1）一般在动词原形末尾加 ed play played start started 2）结尾是 e 的动词只加 - d liv
7、e lived hope hoped use used,3）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ed,stop stopped plan planned trip tripped,4）结尾是“辅音字母+y”的词， 先变“y”为“i”再加ed,study studied carry carried,二.动词过去式的构成,含有 be 动词的句型,一般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. We You were happy. They,一般现在时表示某人某物现
8、在的状态，性质等eg: I am a teacher now. She(He) is a singer. We They are happy. You,三. 一般现在时和一般过去时句型结构的异与同,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 everyday 2）you watch TV everynight. 3）we play basketball on the weekends. 4）They have lessons everymoring.,一般过去时用来
9、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 _ (be)a student. 4) You _ (be)a lovely girl. 5) They _
10、(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.,is,are,am,are,are,were,were,was,2. 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),was,got,Did have,13)
11、 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),went,listened,swam,16) I _(be) ill last Sunday.,17) Amy _ (sit) here yesterday.,18) _ you _(clean) your room just now.,was,sat,Did clean,27) He _(be) here a moment
12、 ago.,19) My 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.,was,Were,studied,did,went,had,visited,lived,was,
