六年级英语四单元不定式和过去式

如题所述

一般过去时:
句子结构:肯定句 主语+be(was,were)+其他 He was sick(生病) yesterday.
否定句 主语+be not+其他 He wasn't ill yesterday.
疑问句 Be+主语+其他 Were you ill yesterday?
或: 肯定句 主语+动词的过去式+其他 例句:Mary stayed home last summer
否定句 主语+did not+动词原型+其他 No, she didn't watch.
疑问句 Did+主语+动词原型+其他 Did Mary watch television last weekend?
关键词:yesterday,yesterday morning等 ,last week, last year, at the end of last term,
一段时间+ago如:ten years ago, five hours ago, on January 1st,2004, in the 1980s等。
Just now,in the old days, long ago, a moment ago注意动词的过去式有两种:一种是规则动词的过去式;另一种是不规则的动词不定式。所谓规则动词不定式就是在动词后面直接加ed,比如动词stay,want等,它们的过去式就是stayed,wanted;而不规则动词不定式就不能在动词后直接加ed,比如:do,eat,sit等,它们的过去式分别为did,ate,sat等,没有固定某种形式,这部分要经常练习,多看多记就不容易忘了
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