关于短语动词 例如 turn off 的相关问题.例如 He turned off the radio.1请问off是介词还是副词?2如果是介词 off the radio 3如果是副词 the radio是宾语吗?4turned off 是短语动词吗?5可不可以说 The radio was turned off by him.6若5可以 The radio was turned off by him 中 by him 1)其中 turned 是用作及物动词 还是不及物动词？2)这句话的谓语是不是tuned off？3）He turned the radio off 中 谓语又是什么呢？

关于短语动词 例如 turn off 的相关问题.
例如 He turned off the radio.1请问off是介词还是副词?
2如果是介词 off the radio
3如果是副词 the radio是宾语吗?
4turned off 是短语动词吗?
5可不可以说 The radio was turned off by him.
6若5可以 The radio was turned off by him 中 by him
1)其中 turned 是用作及物动词 还是不及物动词？
2)这句话的谓语是不是tuned off？
3）He turned the radio off 中 谓语又是什么呢？