中财网留学推荐信模版:重点句型和语法
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二，重点句型和语法
1．一般过去时
表示过去发生的动作或存在的状态,通常与
过去的时间状语连用:
yesterday ,last week(month,year)
（1）系动词be的过去时: am(is) →was, are →were
陈述句：He was at home yesterday.
否定句：He wasn’t at home yesterday.
疑问句：Was he at home yesterday?
Yes ,he was./No ,he wasn’t.
（2）行为动词的一般过去时:
陈述句：主语+动词过去式+其它
I go to the movie. →I went to the movie.
否定句：主语+助动词didn’t+动词原形+其它
I don’t go to school today. →I didn’t go to school.
一般疑问句：Did +主语+动词原形+其它
Do you have breakfast? →Did you have breakfast?
Yes,I do./No,I don’t.
（3）规则动词的过去式变化规则
变化规则
一般在词尾加—ed.
以不发音的e结尾的，只加--d.
love →loved
以辅音字母+y 结尾的，变y为i ,再加—ed.
carry →carried
以一个辅音字母结尾的重读闭音节，先双写这个辅音字母，再加-ed
plan →planned
动词不规则变化：
do →did
see →saw
give →gave
write →wrote
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6．What did she do ? She did her homework
7．What did he do last weekend ? He played soccer．
8．It’s time to go home= It’s time for home