請教英文問題

phrasal verbs短語動詞
(1)短語動詞是與副詞或介詞相結合的動詞。副詞與介詞被稱為小品詞(particles)。
She TURN OFF the radio.
Mr Knight offered to PUT him UP.
(2)短語動詞擴大動詞的原有意思或衍生新的意思。例如break某物是指破壞某物，但如果break out of某地，意思是逃離某地。
They BROKE OUT OF prison on Thursday night.
The pain gradually WORE OFF.

For examples:
Give (sth) up 放棄
Cancel out 抵消
Die hard 難改掉
Old habits die hard.

They are phrasal verbs that can represent a specific meaning which can't be understood by combining meanings of single words only. You may use such kind of verb anytime if you find the meaning you want to express match any phrasal verbs you know.