初一英语语法 一般过去式ppt课件.ppt
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1、一般过去时态的构成,一般过去时态陈述句的构成:主语+动词的过去式+宾语+(表示过去的时间状语)a否定式结构:主语+ did + not/didnt+动词原形+ 宾语+ (表示过去的时间状语)一般疑问句结构:Did+主语+动词原形+宾语+(表示过去的时间状语),动词的过去式是在动词原形的基础上变化的。动词的过去式可分为规则动词和不规则动词。规则动词的过去式变化如下: (1)一般情况下,动词词尾加 -ed ,如: worked played wanted acted (2)以不发音的 -e 结尾动词,动词词尾加 -d,如: lived moved decided declined hoped ju
2、dged raised wiped,(3)以辅音字母 + y结尾的动词,把-y变为-i 再加-ed,如: studied tried copied justified cried carried embodied emptied (4)以一个辅音字母结尾的重读闭音节动词,双写词尾辅音字母,再加 -ed,如: stopped begged fretted dragged dropped planned dotted dripped 注:不规则动词的过去式变化规律性不强,须多加记忆。 go - went,make - made,get - got ,buy - bought ,come - cam
3、e ,fly-flew ,is/am-was,are-were ,see-saw ,bring-brought,do-did,teach-taught, think-thought, say-said, sit-sat. read-read, spend-spent, eat-ate ,give-gave, sit-sat, tell-told, write-wrote, fell-felt, find-found, hear-heard, know-knew, put-put, grow-grew,take,took,catch-caught,come-camebecome-became,s
4、wim-swam,sweepswept,singsang,drawdrew,,一般过去时的用法,1)在确定的过去时间里所发生的动作或存在的状态。例如:时间状语有:yesterday, last week, an hour ago, the other day, in 1982等,Where did you go just now? 刚才你上哪儿去了?,2)表示在过去一段时间内,经常性或习惯性的动作。例如: When I was a child, I often played football in the street. 我是个孩子的时候,常在马路上踢足球。,3)句型:It is time f
5、or sb. to do sth 到时间了 该了。例如:It is time for you to go to bed. 你该睡觉了。 It is time that sb. did sth. 时间已迟了 早该了 ,例如It is time you went to bed. 你早该睡觉了。,III. 用所给词的适当形式填空。 1. Tom and Mary _ (come) to China last month. 2. Mike _(not go) to bed until 12 oclock last night. So he _ (get ) up late. 3. Mary _ (re
6、ad) English yesterday morning. 4. There _ (be) no one here a moment ago. 5. I _ (call) Mike this morning. 6. I listened but _ (hear) nothing. 7. Tom _ (begin) to learn Chinese last year. 8. Last week we _ (pick) many apples on the farm. 9. My mother _ (not do) housework yesterday. 10. She watches TV
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