英语的连词什么作用，什么时候才用到？
连词是一种虚词,它不能独 立担任句子成分而只起连接词与词,短语与短语以及句与句的作用。
1、连词的作用
连词的作用就是连接句子,词,短语,按其在句中的功能,句子可分为并列句,主从复合句.不同的连词引导的句子种类也不同。
如:and, but, so, or一类连词通常引导并列句;if, as soon as, though, the moment, as…as… than
等,考生在备考复习中,可从句式分析的角度入手,把握句子的类型,通过句式,掌握连词的用法,辨析连词在不同句式中的意义差别及用法特点。
2、引导从句的连词
一.主语从句
What, that, whether, who, which, when, where, how, why
二.宾语从句
What, that, whether, if, who, which, whose, when, where, how, why
三.表语从句
What, that, whether, as if, who, which, when, where, how, why
四.同位语从句
That, whether, when, where, how, why
五.定语从句
That, who, whom, whose, which, when, where, why, as
六.状语从句
1.时间
When, while, after, until, till, before, as, as soon as, every time, the moment, since, the
first time, next time, by the time, the day, directly, immediately, instantly
2.地点
Where, wherever, anywhere, everywhere
3.原因
Because, since, as, for, now that, not that…but that, seeing that
4.目的
So, so that, in order that, in case, for fear that, lest
5.结果
So…that, such…that, so that, with the result that
6.条件
If, unless, if only/only if, as/so long as, in case, supposing (that), given that, on
condition that, provided/providing that
7.让步
Though, although, even though, even if, while, whether…or, whether…or not, whoever,
whomever, wherever, whenever, however, whatever, whichever, despite the fact that,
regardless of(the fact that)
8.比较
As, than
9.方式
As, as if, as though, the way
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