在一个句子中是用to be a dooctor还是用be a doctor？

Question

如题所述

Answer 1

答：我们认为在一个句子中还是必须根据上下文的语境来判断到底该用to be a dooctor 还是be a doctor的。例如：

1.She told us that she would like to be a doctor.

2.My brother will soon be a doctor after he graduates from that medical university.

My brother is a doctor.

Answer 2

to be a teacher是不定式，不能做谓语，be a teacher属于谓语放在情态动词后，如
He must be a teacher.他一定是老师。
He wants to be a teacher.他想成为一名老师。

Answer 3

关键看它前面的动词，或者看它充当什么句子成分。
I want to be a doctor. (不定式宾语，我想当医生)