为什么think they 的they不是them?

为什么think they 的they不是them? 为什么是where are they.不是them? 为什么是what do they think of the books 为什么不是 how do they think they-them的用法 they think dogs might -----(bite) them Both of ___(they,them)are good at runing.为什么不是THEY? They think they will b( ) them good luck. let‘s play football with （them） 为什么这里是填them而不是they.they不是将来时 Please help them to do some housework中them为什么不是they -Are they happy?—Not they,为什么不是not them?而且为什么可以用not?为什么不用the Aren't they?老师曾说,动词后面的人称代词为宾格,这里的they为什么不是它的宾格them呢? 不是及物动词后面要跟宾格吗,think是及物动词.I think they are great.为什么they 不用宾格