在 He 和ofen 中间加 does not：He doesn't often play football..They often sleep under trees.改为否定句:They don't ofte
在 He 和ofen 中间加 does not：
He doesn't often play football.
.They often sleep under trees.
改为否定句:
They don't often sleep under trees
I like this shirt.
改为否定句:
I don't like this shirt.
否定句的句型
一、一般否定。
举例：
He will not / won't come. 他不会来了。
二、部分否定（not 和 all, both, every, altogether, always, entirely, completely 等词出现在同一句时）。
举例：
Not all men can be masters. / All men cannot be masters. 并非所有人都能成为大师。
三、完全否定（用 no, never, nobody, nothing, none, neither 等否定词）。
举例：
None / Neither of them is a doctor. 他们（俩）没有一个是医生。
四、转移否定
1. not 和 think, believe, suppose 等词连用。
举例：
I don't think he will come. 我认为他不会来了。
2. not 和 because 连用。
举例：
I didn't take a raincoat because it was raining. 我并不是因为下雨才带雨披的。
五、双重否定。
举例：
Nothing is impossible. 凡事皆有可能。
六、转换否定
1. 肯定表示否定。
举例：
He is the last man I want to see. 他是我最不想见的人。
2. 否定表示肯定。
举例：
I couldn't agree more. 我非常赞成。
七、含有否定意义的词（包括 seldom, scarcely, hardly, little, few 等）。
举例：
I seldom see him. 我几乎见不到他。
We had little rain last year. 去年几乎没有下雨
