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hat,而不用which.例如:He was the first person that passed the exam.他是第一個(gè)通過考試的人。含有介詞的固定動(dòng)詞詞組中,介詞不可前置,只能放在原來的位置上。例如:This is the house in which we lived last year.這是我們?nèi)ツ昃幼〉姆孔印. as 引導(dǎo)的非限定定語從句只能修飾句子,which 引導(dǎo)的非限定性定語從句可以修飾句子,也可以修飾名詞。② 引導(dǎo)非限定性定語從句時(shí),只能修飾句子,可置于被修飾句子后面、前面或主謂之間,翻譯成“正如...那樣”例如:The earth moves around the sun, as we all know.As we all know,The earth moves around the sun. The earth, as we all know, moves around the sun③ 在非限制性定語從句中,which和as引導(dǎo)定語從句時(shí)的區(qū)別:a. which引導(dǎo)的從句不能放在主句前,而as引導(dǎo)的從句則既可以放在主句前,也可以放在主句后,還可以放在主謂之間。Last term our maths teacher set so difficult an examination problem as none of us worked out.上學(xué)期我們數(shù)學(xué)老師出了一道我們沒有一個(gè)人會(huì)的數(shù)學(xué)題。例如:The girl who often helps me with my English is from England.經(jīng)常在英語方面幫助我的那個(gè)女孩是英國人。(作賓語)3. who, whomwh