⑴am 和is在一般过去时中变为was。（was not=wasn’t） ⑵are在一般过去时中变为were。（were not=weren’t）
⑶带有was或were的句子，其否定、疑问的变化和is, am, are一样，即否定句在was或were后加not，一般疑问句把was或were调到句首。
3．句中没有be动词的一般过去时的句子
否定句：didn’t +动词原形，如：Jim didn’t go home yesterday. 一般疑问句：在句首加did，句子中的动词过去式变回原形。如：Did Jim go home yesterday? 特殊疑问句：⑴疑问词+did+主语+动词原形？如： What did Jim do yesterday?
⑵疑问词当主语时：疑问词+动词过去式？如：Who went to home yesterday?
动词过去式变化规则：
1．一般在动词末尾加-ed，如：pull-pulled, cook-cooked 2．结尾是e加d，如：taste-tasted
3．末尾只有一个元音字母和一个辅音字母的重读闭音节，应双写末尾的辅音字母，再加-ed，如：stop-stopped
4．以“辅音字母+y”结尾的，变y为i， 再加-ed，如：study-studied 5．不规则动词过去式： am,is-was, are-were, do-did, see-saw, say-said, give-gave, get-got, go-went, come-came, have-had, eat-ate, take-took,
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run-ran, sing-sang, put-put, make-made, read-read, write-wrote, draw-drew, drink-drank, fly-flew, ride-rode, speak-spoke, sweep-swept, swim-swam, sit-sat
过去时练习：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 ________
Be动词的过去时练习
一、用be动词的适当形式填空。 1. I ______ an English teacher now. 2. She _______ happy yesterday.
3. They _______ glad to see each other last month. 4. Helen and Nancy ________ good friends. 5. The little dog _____ two years old this year. 6. Look, there ________ lots of grapes here.
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7. There ________ a sign on the chair on Monday.
8. Today _____ the second of June. Yesterday ______ the first of June. It _____ Children’s Day. All the students ______ very excited. 二、句型转换。
1. There was a car in front of the house just now.
否定句：________________________________________________ 一般疑问句：____________________________________________ 肯、否定回答：__________________________________________ 三、 中译英。
1．我的故事书刚才还在手表旁边。
___________________________________________________________
2．他们的外套上个礼拜放在卧室里了。
___________________________________________________________
3．一会以前花园里有两只小鸟。
___________________________________________________________
行为动词的过去时练习
一、用be动词的适当形式填空。
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1. I ______ (watch) a cartoon on Saturday. 2. Her father _______ (read) a newspaper last night.
3. We _________ to zoo yesterday, we _____ to the park. (go) 4. ______ you _______ (visit) your relatives last Spring Festival? 5. ______ he _______ (fly) a kite on Sunday? Yes, he ______. 6. Gao Shan _______ (pull) up carrots last National Day holiday. 7. I ____________ (sweep) the floor yesterday, but my mother ______. 8. What ______ she _______ (find) in the garden last morning? She __________ (find) a beautiful butterfly. 二、句型转换。
1. They played football in the playground.
否定句：________________________________________________ 一般疑问句：____________________________________________ 肯、否定回答：__________________________________________ 三、中译英。
1. 格林先生去年住在中国。
________________________________________________________ 2. 昨天我们参观了农场。
________________________________________________________
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