Book 6   Unit 4New words and expressions
1. come about  发生；造成(无被动)惯用于疑问句（与how连用）中 ⑴ The argument came about when they talked about politics.   他们谈到政治时就发生了争论。⑵ 事故是怎么发生？How did the accident come about ?
come aboutcome acrosscome alongcome tocome oncome outcome upcome up with
发生，造成偶遇进展，进行，一起来总计，谈到加油；快点；得啦出版，花开被提出；走近；发芽提出（提议）；赶上