Question

第三人称单数做主语的否定句中胃语动词需变化吗

Answer 1

第三人称单数做主语要注意下面几点:
1. 肯定句，一般现在时，动词后加s或es或去y加ies，如
He likes me.
He does this often.
He studies hard.

2. 谓语中有be动词禅笑时，讨论现在或将来用is，讨论过去用was, 如
he is lovely.
he is going to beijing.将来时敬芹
he is reading.进行时
he is accepted.被动语态

he said he was tired.
he said he was going to beijing.
he said he was reading.
he said he was accepted.

3. 谓语中有have，讨论现在用has，讨论过去用had.

4. 把1中的句子改成否定句时，要在主语后加does，谓语动词变回到圆形：
he doesn't like me.
he doesn't do this often.
he doesn't study hard.
变成疑问句时，does 放到主语前面去：
does he like me?
does he do this often?
does he study hard?

5. 以上2-3改为否定句时，直接在动词后面加not.。疑问句，把is was提到主语前。

6. has, had作“亮袭毕有”解释，其否定句、疑问句规则参照4或5；作完成时中的助动词时参照5；其他情况时参照4，如：
有：
he hasn't anything to eat.
he doesn't have anything to eat.
has he have anything to eat?
does he have anything to eat?

助动词：
has he finished?
he hasn't finished.

其他情况：
he doesn't have(吃) breakfast on weekends.
does he have breakfast on weekends?