知识点总结
连词是一种连接词与词,短语与短语以及句与句的虚词, 它不能独立担任句子成分而只起连接作用。连词主要可分为两类:并列连词和从属连词。
一、并列连词用来连接平行的词、词组和分句。并列连词连接的双方是对等的。
常有的并列连词有and, both…and(两者都), neither…nor(既不……也不……), not only…but also(不但…而且), as well as等。但如果连接的两部分意义不趋向一致,意义有转折的并列连词有:but(但是), however(然而), while (而),only (只不过)。还有表示选择关系的并列连词,如:or, either…or(或者…或者…), 再有的是连接双方,互为因果,或表示前因后果的连词有:for(因为), so(所以), therefore (因此)等。
例句: She plays not only the piano, but (also) the guitar.
二、从属连词,在初中范围内常常考查引导状语从句、宾语从句的从属连词。其中有时间状语从句,常用的连接词有:when, while, as, since, before, after, once, as soon as, until, till连接条件状语的连词有:if, unless, as long as等,而原因状语的连接词有because, since, as, now that (既然)。目的、结果、方式、比较、地点等状语从句的连接词有:so that, so…that, such…that, as…as, than, where… 它们在句子与文章中几乎无处不见。用来连接宾语从句,如:that, if, whether。例句如下:
Tom will call me as soon as he gets to Shanghai.
The meeting didn't start until everyone was there.
I want to know if she is going to see a film.
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