英语的be用在什么地方｛不是be动词｝就是一个Be，像I WANT TO BE A DOCTOR的be一样

Question

如题所述

Answer 1

这个问题具体不太好说.我给你几个例子希望有所帮助
1.I am a student .这里am是be的变化形式
2.I will be a student ///I am going to be a student .这里因为 will /be going to +动词原形,所以不用am 而用be原形.
3.He is a doctor is 是be 的变化形式
4.He wants to be a doctor to+动词原形，不用is而用原形be
总之动词不定式+动词原形、情态动词+动词原形追问

什么是动词不定式，什么是情态动词？？？

追答

你还没上初二吧。你就把老师讲的一些固定用法象：tell Sb.to do Sth.ask Sb.to do Sth. 这里就是不定式，将来老师会讲的‘情态动词也待老师讲。
祝你进步

Answer 2

1. will / shall / be going to + be
He will be a good teacher.
My mother is going to be here at about 25minutes.
I'm being your new maths teacher. I shall be more healthy .
2. to be
I want to be an English teacher.
Do you like to be with us?
3. 作主/表/宾 用to be/being
Being/To be a policeman is kind of dangerous but exciting.
My dream is being / to be a good teacher.

Answer 3

不是be用在什么时候，而是什么时候用动词原形，
你说的I WANT TO BE 是因为to后面加动词原形，所以写be。
一般情况，系动词都有各种时态，在用在动词原形的情况下，成为be