as (it)appears, as (it)seems, as (it)often happens, as (it)was pointed out / said / reported / announced, as (it)was said earlier, as I remember (it), as is well－known, as is known to all, as anybody can see等。

　　【完成例句】

　　(20)这就是我一直在找的书。

　　This is the book which / that / 不填I am looking for.

　　(21)他深爱对他慈爱的父母。

　　He loved his parents deeply, both of whom are very kind to him.

　　＝He loved his parents deeply, of whom both are very kind to him.

　　(22)我没有足够的钱去买那条昂贵的裙子。

　　I don't have enough money with which to buy such an expensive dress.

　　(23)从1998年到2004年Mike在这所大学学习，在此期间，他学习很努力并当选为学生会主席。

　　Mike studied at the university from 1998 to 2004, during which time he studied very hard and was made chairman of the Students' Union.

　　【结论8】“介词＋关系代词”引导的定语从句，关系代词指人时用whom，指物时用which。

　　①某些带有介词的动词短语，介词可以提至关系代词之前，但是在一些固定搭配的短语动词中，由于动词和介词不可以分割，因此不能将介词置于关系代词之前，如take care of, look for, look after, care for等。

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