3)both都，指两者。

a.both与复数动词连用，但both…and…可与单数名词连用。

b.both,all都可作同位语，其位置在行为动词前，be动词之后。如果助动词或情态动词后面的实义动词省去，则位于助动词或情态动词之前。

Who can speak Japanese?We both(all)can.

4)neither两者都不

a.neither作主语时，谓语动词用单数。

b.作定语与单数名词连用，但neither…nor用作并列连词，可与复数名词连用。其谓语采用就近原则。

c.可用于下列句型，避免重复。

She can‘t sing，neither(can)he.

neither与nor

d.如前句是否定式从句，则主句用neither，而不用nor。

If you don‘t do it，neither should I.如果你不干，我也不干。

e.如后连续有几个否定句式，则用nor，不用neither。

He can‘t sing，nor dance，nor skate.

九、英语六级语法常考知识点：though although

（一）

1)表示目的;它的否定式是so as not to do。

Tom kept quiet about the accident so as not to lose his job.

汤姆对事故保持沉默是为了不丢掉他的工作。

Go in quietly so as not to wake the baby.

轻点进去，别惊醒了婴儿。

2)so kind as to---劳驾

Would you be so kind as to tell me the time?

劳驾，现在几点了。

（二）

though,although

注意：当有though,although时，后面的从句不能有but，但是though和yet可连用

Although it‘s raining,they are still working in the field.

虽然在下雨，但他们仍在地里干活。

He is very old,but he still works very hard.

虽然他很老，但仍然努力地工作。

Though the sore be healed,yet a scar may remain.

伤口虽愈合，但伤疤留下了。(谚语)

典型例题

1)she is young,she knows quite a lot.

A.When　B.However C.Although D.Unless

答案：C。意为虽然她很年轻，却知道许多。

2)as,though引导的倒装句

as/though引导的让步从句必须表语或状语提前(形容词、副词、分词、实义动词提前)。

Child as/though he was,he knew what was the right thing to do.