◆短语动词是由动词加介词、副词或其他词构成的固定词组
1. 动词＋介词
由动词加at, for, from, into, of, to, with等构成，相当于一个及物动词，宾语无论是名词还是代词，只能放在介词后。在被动语态中，整个短语动词被看做整体，不可拆开或漏缺。
look into the matter调查这起事件
2. 动词＋副词
动词加away, back, out, ahead, forward, aside等构成的短语动词总是动副型的。这类短语动词有些及物有些不及物。
turn down the TV/turn the TV down；
The war broke out in 1980.
3. 动词＋名词＋介词
这类短语动词相当于及物动词，需要跟宾语，既可以做谓语也可以做非谓语。这类短语动词大多可以构成被动语态。其中三个组成部分的词序有时可以变动。
To this she did not pay the slightest attention.她一点都没在意这个。
4. 动词＋副词＋介词
这类结构的短语动词相当于一个及物动词。
The old should learn from the young and keep up with the times.老人要向年轻人学习，与时俱进。
The old law must be done away with.陈旧的法律必须被废除。
5. be＋形容词＋介词
6. 短语动词一词多义和几个短语动词含义相同的情况，平时应注意积累。
It is impolite to break into talk. (打断)
He was detected in the act of breaking into her house. (破门而入)
When others speak, he always likes to break in/cut in/get in/put in. (插嘴)