1.As:when/since/as…as…/I know some of the family secrets ,young as I am.(让步)/Do as I do(壮从)/Tom is unusually tall ,as are his brothers.(倒装)/To shut your eyes to facts, as many of you do, is foolish.(定语从句)/as for=as to至于(句首)/as much=so/as long as: 只要/=while/as such:确切而言

　　2.Unless

　　3.Until

　　4.Before

　　5.Because

　　6.Either

　　7.So

　　8.Nor

　　9.Never

　　10.For

　　11.Since

　　12.If

　　13.Between

　　14.After

　　15.Only if

　　16.Lest 子句为should+V

　　17.Although/while/when

　　18.Now that

　　19.If only :If only she would marry me ! (常表示愿望或未实现的条件,尤用于感叹句)

　　20.Provided that

　　21.So that

　　22.Even if

　　23.Neither

　　24.Each

　　25.Who

　　26.Which

　　27.What: what if: what if the rumor is true?(万一……怎么办)

　　What though: what though we are poor, we still have each other.(既使……又有什么关系)

　　28.Except/aside from/other than :except for+N/except that…

　　29.Or:or else=otherwise

　　30.But

　　EX: I never go past my old school but I think of Mr merry,the head-master.

　　31.That

　　32.In that

　　33.Such that

　　34.As if/as though: He looks as if he had seen a ghost.(子句用过去时)

　　35.Where

　　36.How: He told me how he had read about it in the newspaper.(=that )(引导间接引语)

　　37.Supposing /if

　　38.Whereas/on the other hand/while

　　39.But for /but that/ except for

　　40.While:While I admit that the problems are difficult, I don’t agree that they can not be solved.(=although)

　　41.When:since/although

　　42.Nevertheless/nonetheless

　　43.Only:The book is likely to be useful, only it is rather expensive(=however)

　　He would probably do well in the exam, only that he gets rather nervous(=but that)