各种从句引导词总表一、如何使用宾语从句、主语从句、表语从句和同位语从句的引导词引导词作用例句That相对不缺少成分；陈述语气I knew that you were here [just now].ifwhether相对不缺少成分；疑问语气从 句 的 谓 语 动 词 为 ：ask;question;wonder---I doubt if\whether he can do it [well now]. what缺少主语，宾语，定语（指物）1. You can be sure of what you have [at present]. sold for what was enoughWho缺少主语，（指人）I wanted to know who will come.Whom缺少宾语，（指人）I don’t know whom you’re waiting for.When缺少时间状语He told me [when ]we would gather.Where缺少地点状语Can you tell me [where]he livedWhy缺少原因状语He wanted to explained [why] he was late.How缺少方式状语Can you tell me [how] you want your teaWhich缺 少 定 语 ， （ 指 物 、人）He’ll buy (which) book he is interested in.whose缺少定语，（指人）She asked whose jacket it is.二、如何选择定语从句的关系词关系词先行词从句成分例 句备 注关系代 词who人主语Do you know the man who is talking with your motherwhom, which和that 在从句中做宾语 时 ， 常 可 以 省略，但介词提前时后面关系代词不能省略，也不可以用thatwhom人宾语Mr. Smith is the person with whom I am workingThe boy (whom) she loved died in the war.whose人物定语I like those books whose topics are about history.The boy whose father works abroad is my deskmate. that人物主语宾语A plane is a machine that can fly. 缺少主语She is the pop star (that) I want to see 【very much】. 缺少宾语which物主语宾语The book (which) I gave you was worth $10. 缺少宾语The picture which was about the accident was terrible. 缺少主语关系副 词when时间时间状语I will never forget the day【 when】 we met【 there】.可用 on whichwhere地点地点状语This is the house【 where】 I was born.可用 in whichwhy原因原因状语I can’t imagine the reason 【 why 】 he turned down my offer.可用 for which三．并列句和状语从句的连接词连词 并列连词同等关系and\both---and neither---nor、 not only---but also转折关系but\however\yet\while选择关系Or\either---or因果关系So\therefore 从属连词状语从句时间when\while\since\as\till\untilbefore\after\whenever地点where\wherever原因because\as(由于)\since（既然）条件If\unless\so long as\in case让步Though\although\no matter---\even if方式as(根据)\as if\as though比较as---as\not so---as结果So---that\such---that目的in order that
