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1、定语从句（四）“介词+关系代词”引导的定语从句1.很多情况下关系副词用“介词＋which/whom”来代替***关系代词前的介词如何确定？A.依据定语从句中动词的某种习惯搭配 Mr.Smithboughtanewhouseonwhichhespentallhismoney.B.依据先行词的某种习惯搭配确定Thisisahallwherethemedicalconferencewillbeheld.=Thisisahallinwhichthemedicalconferencewillbeheld.这是礼
2、堂，医学会议将在此召开。（inthehall）C.根据所表达的意思确定Thegaswithwhichdoctorscansavethepatientsiscalledoxygen.Thegaswithoutwhichwecannotliveiscalledoxygen.IshallneverforgetthoseyearswhenIlivedwithher.=IshallneverforgetthoseyearsduringwhichIlivedwithher.我将永远不会忘记我跟她生活的那些岁月。T
3、his is the boy (whom / who / that) I played tennis with yesterday.This is the boy with whom I played tennis with yesterday. 这是我昨天跟他打台球的男孩。The manager whose company I work in pays much attention to improving our working conditions.The manager in whose co
4、mpany I work pays much attention to improving our working conditions.我工作的那家公司的经理十分注意改善我们的工作条件。注意：１． 含有介词的短语动词一般不拆开，介词仍放在短语动词的后面。如：look for, look after, take care of 等。This is the watch (which / that) I am looking for. (正) 。This is the watch for whi
5、ch I am looking . (误)The babies (whom / who / that) the nurse is looking after are very healthy. (正)The babies after whom the nurse is looking are very healthy. （误）２．若介词放在关系代词前，关系代词指人时只可用whom，不可用who, that；关系代词指物时只可用which，不可用that。关系代词是所有格时用whose，
6、介词在句尾时，关系代词可which,that,whom,who,都行，而且还可以省略。The man with whom you talked just now is my neighbour. (正) The man with that / who you talked just now is my neighbour. (误)The plane in which we flew to Canada was really comfortable. (正)The plane in
7、that we flew to Canada was really comfortable. (误)３．“介词+关系代词”前还可有some, any, none, all, both, neither, many, most, each, few等代词或者数词。如：He loves his parents deeply, both of whom are very kind to him. In the basket there are quite many apples, some of w
8、hich have gone bad. There are forty students in our class in all, most of whom are from big cities. Up to now, he has written ten stories, three of which are about country life. 4.......，...of+关系代词=whoseIliveintheroo
