动词的ing形式和动词的过去分词形式。表示从一种状态到另一种状态的变化,有become+动词ing以及become+过去分词两种形式。系动词词义不完整,在句中不能单独使用(除省略句外),后面必须接有表语,系动词和表语一起构成合成谓语。
become用作连系动词,意为“成为”,其后可接:
1.名词
They became great friends.他们成了莫逆之交。
He aims to become a computer expert.他打算当一名电脑专家。
She has become a painter of distinction.她成了一名杰出的画家。
2.形容词
She became very fond of her.她变得非常喜欢她了。
He soon became angry. 他过了一会儿就生气了。
She has become familiar with the house.她对这房子已变得很熟悉。
I’ve become used to a vegetarian diet.我已习惯于素食。
3.过去分词
They had just become engaged.他们刚刚订婚。
At last the truth became known to us.我们终于知道了真相。
The room soon became crowded.房间很快变得拥挤起来。
Jamie was becoming annoyed with me.杰米变得对我不高兴起来。
其后一般不接不定式
误:He became to be interested in biology.
正:He became interested in biology.他开始对生物感兴趣了。
误:Then we became to like him.
正:Then we began [came] to like him.于是我们开始喜欢他了。