en though, as(尽管),whether...or...(不管……还是……),no matter+疑问词,“疑问词+ever”构成的复合词等。如:РAlthough/ Though he worked hard, he failed the exam again.Р虽然努力学习,他还是没有通过考试。РWhether you believe it or not, it is true.Р不管你信还是不信,它都是真的。РWe'll wait for him, however late it is.Р无论多么晚,我们都等他。РNo matter who he is, he will answer for what he has done.Р无论是谁,他都得为他的所作所为负责。Р(2)as引导让步状语从句,意思等同于though和although,表示“虽然,尽管”,但as引导的从句一般放在主句之前,并且需要用倒装语序。注意:在倒装结构里,可以用though代替as,却不能用although。如:РStrange as/ though it seems, it tastes good.=Although it seems strange, it tastes good.Р它尽管看起来很奇怪,但是味道很好。Р(3)though还可以用作副词,意为“还是,然而”,一般放在句末,而although则没有这种用法。如:РHe said he e on time; he didn't, though.Р5.条件状语从句Р引导条件状语从句的连接词有:if, unless, so (as) long as, in case (万一), on condition that, suppose/ supposing (that), provided/ providing (that)等。如:
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