关系副词引导的定语从句There are occasions when (on which) one must yiel
关系副词引导的定语从句
There are occasions when (on which) one must yield.任何人都有不得不屈服的时候.
Beijing is the place where (in which) I was born.北京是我的出生地.
Is this the reason why (for which) he refused our
offer?这就是他拒绝我们帮助他的理由吗?
请解释下3句中用介词的原因