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联合并列句主要由and, not only…but also…(不但……而且……), when(＝ and just at this time就在这时)等连词连接。 【考点4】因果并列句 It must have rained last night, ______ the ground is wet this morning. A. because B. since C. as D. for D 表示对前一分句的内容加以推断性的原因，用for。 主要由for(因为), so(因此)等连词连接。 【考点4】否定句后面的反意问句 He had little idea that it was getting so serious, ______？ A. didn't he B. did he C. wasn't it D. was it B 陈述句是含有否定词little的否定句，反意问句用肯定形式。 1. 前面的陈述部分有半否定词hardly, rarely, scarcely, few, little, seldom等时，反意问句用肯定形式。 2. 陈述部分虽有否定前(后)缀词(如： dis， in， un， less)时，反意问句仍要用否定形式。 【考点5】祈使句后面的反意问句 Lily, help me put up the picture on the wall, ______？ A. will you B. don't you C. are you D. didn't you A 陈述句是肯定祈使句，反问部分用will you。 | 
