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中考网整理了关于2021年中考英语知识点之状语从句的引导词，希望对同学们有所帮助，仅供参考。 不同类型的状语从句用不同的引导词 1.时间状语从句 ① 时间状语从句常用when, as, while, before, after,since, till, until, as soon as等连词来引导。如： While he was doing his homework, the telephone rang. As he walked along the lake, he sang happily. He had learned a little Chinese before he came to China. After he finished middle school, he went to work in a factory. ② 在时间状语从句里，用一般现在时代替一般将来时，用一般过去时代夫过去将来时。如： I’ll ring you up as soon as I get to New York. I would tell him everything when he came back. 2. 条件状语从句 ① 条件状语从句通常由if（如果）, unless（除非）引导。如： What shall we do if it snows tomorrow? Don’t leave the building unless I tell you to. ② 在条件状语从句里，用一般现在时代替一般将来时，如： I’ll help you with your English if I am free tomorrow. He won’t be late unless he is ill. ③ “祈使句 + and (or)+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。如： Hurry up, and you’ll catch the early bus. = If you hurry up, you’ll catch the early bus. Hurry up, or you’ll be late. = If you don’t hurry up, you’ll be late. (责任编辑：admin) |