become的语法特点与句式搭配
1. 用作连系动词，其后可接名词、形容词、过去分词等作表语。如：
His dream had now become a reality. 他的梦想现在成了现实。
Gradually they became silent. 他们逐渐沉默起来。
The sky became suddenly overcast with clouds. 突然天空变得乌云密布。
2. 有时可用于进行时态。如：
It’s becoming a serious problem. 它正在成为一个严重问题。
It’s becoming dangerous to go out alone at night. 夜间独自外出已经越来越危险了。
3. 其后一般不接不定式。如：
于是我们开始喜欢他了。
误：Then we became to like him.(www.hxen.com)
正：Then we began [came] to like him.
他已经适应了新的职务。
误：He has become to be accustomed to his new duties.
正：He has become accustomed to his new duties.
4. What becomes of …为英语惯用表达，意为“……后来变成怎样？”如：
What became of him? 他后来怎样了？
Tell us what became of the missing ship. 告诉我们这只失踪的船后来怎样了。