Question

be动词原型怎么使用？

Answer 1

be动词的原型一般用在动词不定式还有情态动词的后面，还有后面必须跟动词原形的短语，以及祈使句。
比如，Be careful,the car is coming to you.
He must be a brave boy,because he saved the cat in danger.

Answer 2

Be 动词原型 那就是am is are 后面可以接形容词，名词，在句子中通常做谓语。

Answer 3

在一般现在时各个人称的用法是I am/You are/He is/She is/It is/We are/You are/They are
在There be句型中有There is/There are
过去时：I was/You were/He was/She was/It was/We were/You were/They were

Answer 4

be为系动词，包括am，is，are
过去式是was和were
后面接形容词作定语