① 原因：because, since, now that(既然)as, for, this reason ...
② 結(jié)果：so that, so, therefore, consequently, so as to, as a result ...
③ 時(shí)間：after, before, when, while, as, until, as soon as, since, by the time, once, lately, presently, shortly after, currently, at present, nowadays ...
④ 條件：if, only if, once, unless, in the event (that), in case (that), provided that, on the condition that ...
⑤ 讓步：though, although, even though (if), no matter what / how / when→ whatever / however / whenever ...
⑥ 目的：in order that, in order to, to,
⑦ 比較：than, as ... as, by comparison(相比較)，by contrast(相對照)...
② 結(jié)果：so that, so, therefore, consequently, so as to, as a result ...
③ 時(shí)間：after, before, when, while, as, until, as soon as, since, by the time, once, lately, presently, shortly after, currently, at present, nowadays ...
④ 條件：if, only if, once, unless, in the event (that), in case (that), provided that, on the condition that ...
⑤ 讓步：though, although, even though (if), no matter what / how / when→ whatever / however / whenever ...
⑥ 目的：in order that, in order to, to,
⑦ 比較：than, as ... as, by comparison(相比較)，by contrast(相對照)...