介詞+關(guān)系代詞在這種結(jié)構(gòu)中，關(guān)系代詞若是表示人的意義，就只能用whom ；關(guān)系代詞若是表示事物的意義，就只能用which 。而這種結(jié)構(gòu)中較難解決的問題是介詞的選擇問題，因?yàn)檫@個(gè)問題的解決取決于多種因素：
A）動(dòng)詞與介詞的搭配B）名詞與介詞的搭配C）形容詞與介詞的搭配，等等。總之，要依從句的具體需要而定。
例如：A）動(dòng)詞與介詞的搭配
? ? ? ? He has found a good job for which he is qualified .（ qualify + 名詞+ for "使…具有…資格" ）他找到了一份他能勝任的工作。
? ? ? ? The man to whom you talked just now will chair the meeting tomorrow . （ talk to + 名詞 "與某人談話" ） 你剛才與他談話的那個(gè)人明天主持那個(gè)會(huì)議。
? ? ? ? He is bargaining with the landlord over the monthly price at which the apartment rents .（名詞+ rent at + 表示價(jià)格的詞 "某物以某價(jià)格出租" ）
? ? ? ? 他在與房東就那套公寓出租的月租金進(jìn)行磋商。
? ? ? ? B）名詞與介詞的搭配
? ? ? ? They are still living in the little house in which they've been lived for 15 years . （ in the house "在屋子里" ）他們現(xiàn)在還住在他們已住了15年的那個(gè)小房子里。
? ? ? ? We've worked out a method by which our production can be raised on a large scale.( by a method通過某種方法)我們已研制出了一個(gè)能大規(guī)模提高生產(chǎn)的方法。
? ? ? ? She didn't realize the extent to which she had been distracted .（ to extend "到某種程度" ） 她沒有意識(shí)到她心煩意亂的程度。
? ? ? ? C）形容詞與介詞的搭配
? ? ? ? The secretary with whom the boss is not happy will be fired for her inefficiency . (happy with "對(duì)…表示滿意")老板對(duì)其不滿意的那個(gè)秘書將由于她沒有工作效率而被解雇。
? ? ? ? I've found the job for which I've been eager for a long time.（ eager for "渴望得到…" ） 我已找到了我渴望已久的那份工作。
? ? ? ? He is a learned man with whom we are familiar .(familiar with 熟悉…)他是一位我們熟悉的有學(xué)識(shí)的人。