用法搭配口诀：
Become of + n. = happen to + n. = take place + n. = take the place + n.
例句：
What has become of the missing child?
那个失踪的孩子怎么了？
The new system has become an integral part of our work.
新制度已经成为我们工作的一部分。
The ship became a wreck.
船成了残骸。
become是一个常用的动词，表示“变成、成为”的意思。它的常见搭配有：
1.become+名词：成为某种身份或状态，如becomeadoctor（成为医生）、becometired（变得疲倦）等。
2.become+形容词：表示变得某种状态，如becomehappy（变得快乐）、becomedark（变得黑暗）等。
3.become+动词的-ing形式：表示开始某种行动或状态，如becomerunning（开始跑步）、becomeinterested（开始感兴趣）等。口诀：变成名词、形容词、动词-ing，三种搭配记牢牢。
