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状语从句有很多，其中时间状语从句、条件状语从句是最主要的。它的时态由主从句相呼应来决定，条件状语从句表达将来的情况，但主句为一般将来时，从句为一般现在时态;时间状语从句则主将从现，主过从过，过包括一般过去时和过去进行时两种情况。结果状语从句也很重要，其次是原因、目的、让步、方式和比较状语从句，这些从句的时态主从句一致即可。这些从句已经在连词中复习到了。 热身训练 1.The children were leaving school on Tuesday _______ they saw an accident。 A.when B.while C.because D.after 2.We wont go to the park __ it is fine tomorrow。 A.if B.when C.because D.unless 3.Well see Uncle Wang this Sunday if it ___。 A.wont rain B.isnt rain C.doesnt rain D.didnt rain 4.What was the party like? Wonderful.Its years ___ I enjoyed myself so much。 A. after B.when C. before D. since 5.None of them knew it ______ the teacher told them。 A. when B. until C. after D. though | 
