二、陈述句的否定式

1.主语+系动词be+not+表语

I am not a teacher.我不是一名老师。

They were not late for school yesterday morning.昨天早上他们上学没有迟到。

2.主语+do/does/did+not+实义动词+其他

We do not have any apples in the fridge.我们的冰箱里没有苹果了。

He does not like swimming.他不喜欢游泳。

They did not do their homework last night.他们昨晚没有做作业。

3.主语+助动词/情态动词+not+实义动词+其他

I have not finished my homework.我还没有完成作业。

You should not stay up too late.你不该熬夜。

I won’t have finished the journey by next week.下周前我还未结束行程。

【提示】 变否定句时把第一个助动词变为否定形式。

4.主语+never，hardly，scarcely，seldom，rarely+实义动词

He never smokes cigarette.他从不抽烟。

I hardly know the people there.我几乎不认识那里的人。

She scarcely spoke to him.她很少跟他交谈。

5.否定代词few，little，nothing，nobody，none，no （adj.）作主语或宾语

Nobody will agree to this project.没有人会同意这项计划。

I can do nothing about it.对这事我无能为力。

I have little time for reading.我几乎没有时间看书。

No students will take the course.没有学生会选修这门课。