过去式的变换
1）关键词：
yesterday, last..., ...ago, just now, a moment ago.此外，如果是this morning等也要用过去式，主要看说话的时间和动作发生的时间前后关系。 2）关键句型：
What did...do...?
如;What did you do last weekend？ Where was/were ...?
如：Where was he yesterday? Did ...?
如：Did you see the film yesterday? Was/Were ...? 如; Was your coat on the bed just now? 3）动词：
a. be动词（was, were）
b.实意动词：go-went, play- played, dance-danced, collect-collected, pick-picked, sing- sang, run-ran, jump-jumped, swim-swam, get-got, drink-drank, eat-ate, draw-drew, fly-flew,make-made,sit-sat等 c.助动词：do-did
4）规则动词的过去式由“动词原形+-ed”构成，具体变化有：
1. 直接在词尾加-ed。如: want—wanted, work—worked, need—needed, clean—cleaned
2. 以不发音的e结尾的在词尾加-d。如：like—liked, live—lived, use—used, move—moved
3. 以一个元音字母加一个辅音字母结尾的重读闭音节动词，先双写结尾的辅音字母，再加-ed。如：stop—stopped, trip—tripped
4. 以辅音字母加y结尾的动词，先把y变成i，再加-ed。如：study—studied, carry—carried, hurry—hurried, marry—married
不规则动词的过去式见课本后的不规则动词表。大体上归纳有以下六条记忆法： 1. 以t结尾的词，过去式与原形相同。如：put—put, let—let, cut—cut, beat—beat
2. 以d结尾的词，把d变成t。如:build—built, lend—lent, send—sent, spend—spent 3. 以n结尾的词，在词后加t。如：mean—meant, burn—burnt, learn—learnt 4. 以ow / aw结尾的词，把ow / aw变成ew。如：blow—blew, draw—drew, know—knew, grow—grew
5. 含有双写字母的词，将双写改为单写，在词尾加t。如：keep—kept, sleep—slept, feel—felt, smell—smelt
6. 含有元音字母o / i的词，将o / i变成a。如：sing—sang, give—gave, sit—sat, drink—drank
规则动词词尾加-ed有三种读音：
1. 在清辅音后读作[t]。如：asked, helped, watched, stopped
2在浊辅音和元音后读作[d]。如：enjoyed, studied, moved, called 3. 在t / d后读作[id]。如：wanted, needed
过去式巩固练习题
一、写出下列动词的过去式
is\\am _________fly _______plant ________are ________ drink _________play _______go ________make ________ does _________dance ________worry ________ask _____ taste _________eat __________draw ________put ______ throw ________kick _________pass _______do ________
二．用所给词的适当形式填空
1. I _______(be) at school just now. 3. We ________ (be)students.
4. They ________ (be)on the farm yesterday. 5. Yang Ling ________(be) eleven years .
6. There ________ (be)an apple on the plate yesterday. 8. The mobile phone _______ (be)on the sofa yesterday evening. 9. I _______ at school just now. 10.He ________ at the camp last week. 11.We ________ students two years ago. 12.They ________ on the farm a moment ago. 13.Yang Ling ________ eleven years old last year. 14.There ________ an apple on the plate yesterday. 15.There ________ some milk in the fridge on Sunday. 17.She _______ happy yesterday.
18.They _______ glad to see each other last month. 19.Helen and Nancy ________ good friends. 20.The little dog _____ two years old this year. 21.Look, there ________ lots of grapes here. 22.There ________ a sign on the chair on Monday.. 24. He _________ (live) in Wuxi two years ago. 25. The cat ________ (eat) a bird last night. 26. We _______ (have) a party last week..
28. I ________ (make) a model ship with Mike yesterday. 29. They ________ (play) chess in the classroom last PE lesson.
30. My mother _______ (cook) a nice food last Spring Festival. 31. The girls ________ (sing) and _______ (dance) at the party yesterday. 32. I ______ (watch) a cartoon on Saturday.
33. Her father _______ (read) a newspaper last night.
35. ______ you _______ (visit) your relatives last Spring Festival? 36. ______ he _______ (fly) a kite on Sunday? Yes, he ______. 38. We all ______ (have) a good time last night.
40. Helen ________ (milk) a cow on Friday. 三、按要求改写句子
1. Nancy went to school early.（改成一般疑问句，做否定回答） ______________________________ .
2. They played football in the playground.（改成否定句）
_________________________________________
3.Mr Green cooked a lot of food. （改成一般疑问句，做肯定回答） _________________________________________
3. We played the violin last week.(对划线部分提问)
______________________________________________
4. Mike watched a film yesterday. (对划线部分提问)
__________________________________________
5.They play computer games today. （用yesterday改写句子）
______________________________________
