連詞的分類
1、按連詞的構(gòu)成可將其分為以下幾類：
1)簡(jiǎn)單連詞，如and, if, or, because, but, so
2)關(guān)聯(lián)連詞，如both … and …, not … but …, not only … but also …
3)分詞連詞，如supposing, providing, provided, given
4)短語連詞，如as if / through, even if / through, as / so long as
2、連詞的性質(zhì)可將其分為以下幾類：
1)并列連詞，如and, but, or, nor, so, for, as well as, while, when, not only … but also …, both … and …, either … or …, neither … nor, therefore, yet, nevertheless, however等。它們用來連接平行的詞、詞組或分句。
2)從屬連詞，如after, when, before, as, while, since, until, till, although, though, if, even if, unless, lest, because, than, that, whether, so that, as soon as, as long as, in order that, as though, suppose (that), provided (that), in case (that), now (that), on condition (that), seeing that, so … that, such … that, as … as, so …as等。它們用來引導(dǎo)從句。
注：除連詞外，連接代詞、連接副詞、關(guān)系代詞、關(guān)系副詞也可以來引導(dǎo)一個(gè)從句。
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