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专题六 并列句与状语从句 考点1 since和before与时间搭配 1．If you miss this chance，it may be years ________ you get another one.(2015·重庆，4) A．as B．before C．since D．after 2．We need to get to the root of the problem________ we can solve it.(2015·天津，12) A．while B．after C．before D．as 3．The meaning of the word “nice” changed a few times ________ it finally came to include the sense “pleasant”．(2017·安徽，25) A．before B．after C．since D．while 4．As is reported，it is 100 years ________ Qinghua University was founded.(2011·四川，6) A．when B．before C．after D．since 考点归纳 1．It is＋时间段＋since＋过去时，自从……以来多久了 2．It was＋时间段＋before＋过去时，多久之后才…… 3．It will be＋时间段＋before＋一般现在时，多久之后才…… 4．It won’t be long before...过不了多久就…… There is only one more day to go before your favorite music group play live.(2015·四川，6) | 
