1.someone,anyone等作主语时
someone,anyone,no one,everyone,something,nothing等复合不定代词作主语,谓语动词用单数：
Someone is asking to see you.有人找你.
Sobody is to blame for it.这谁也不怨.
No one wants to read such books.人想看那样的书.
2.all 作主语时
若指人,谓语通常用复数；若指事物或,谓语通常用单数：
All have gone home.大家都走了.
All that glitters is not gold.发亮的不金子.
All is silent.万籁俱寂.(指)
All are silent.人人都沉默不语.(指的人)
【注意】
若是“all of+名词”作主语,则谓语动词与名词的数.
3.either和neither作主语时
若是单独作主语,谓语动词用单数：
Neither was satisfactory.两个都不令人满意.
The two guests have arrived,and either is welcome.两位客人都到了,哪一位都受欢迎.
【注意】
若是“either [neither] of+名词”作主语,则其后的谓语动词可用单数(正式文体)或复数(非正式文体)：
Neither of the two computers is [are] cheap.这两台电脑都不便宜.
Is [Are] either of the boys ready?两个男孩都好了吗?
I don’t think either of them is [are] at home.我想俩个都会不在家.