2017届广东省广州市天河中学高考英语语法一轮复习基础知识点精讲：状语从句01（含答案）_高考复习指南

2017届广东省广州市天河中学高考英语语法一轮复习基础知识点精讲：状语从句01（含答案）

　　才

　　，主句通常要用短暂动词，这时until和till可用before代替。 I didn't leave until

　　till

　　before she came back 直到她回来，我才离开的。 Bells don't ring till until you strike them 铃不打不响。 Peopl do not know the value of their health till until before they lose it 人们直至失去了健康才知其可贵。 3．当not until位于句首时，主句中的主语、谓语要使用倒装语序。 Not until she stopped crying did I leave 直到她不哭了，我才离开的。注意： until引导的从句可以放在主句之前或主句之后，但till从句一般不放在句首。 4．在强调句型中一般只能用until，不用till。 It was not until she took off her drk glasses that I recognized her 直到她摘下墨镜，我才认出她。D．since, ever since 1．since自……以来。表示动作从过去某一点时间一直延续到说话时间为止。主句中通常为延续性动词的现在完成时，since从句中一般用短暂性动词的一般过去时。 It has been just a week since we arrived here 我们到这儿刚刚一星期。 Where haveyou been since I last saw you 自上次我见过你之后，你去了哪里？ Since she was young, she has been collecting stamps 她自年轻时起就一直集邮至今。

　　提示：有时since 从句中也可以用延续性动词，注意它的译法。 Tom is now working on the farm It's two years since he was a college student 汤姆现在农场上班，他大学毕业已有两年了。 2．ever since 从那时起直至现在，此后一直。表示说话者强调主句动作或状态持续时间长，语气比since强。 Ever since they got married in 1950, they have lived happily 自一九五零年结婚以来，他们一直生得很幸福。3．since还可以用作副词或介词。 The big clock was damaged during the war and has been sient（ever）since 这只大钟在战争中损坏了，从此就一直不响了。 My uncle went to Tibet in the 1950s