2017届高考英语一轮复习必备单词素材：Unit 4 Cyberspace（北师大版）_高考复习指南

　　(2)as if/though从句中的省略：如果as if/though引导的方式状语从句为主系表结构且其主语与主句主语一致，则可省略其中的主语和系动词。

　　③Tom raised his right hand as if to_say (say) something.

　　汤姆举起右手好像要说什么。

　　(3)as if/though从句中的语气：如果as if/though引导的从句表示实现的可能性很小或与事实相反，则用虚拟语气；如果实现的可能性较大，则用陈述语气。用虚拟语气时，从句谓语动词变化如下表：

　　与将来事实相反从句谓语用would/could/might＋动词原形

　　与现在事实相反从句谓语用过去时

　　与过去事实相反从句谓语用过去完成时

　　④It was John who broke the window. Why are you talking to me as if I had_done (do) it？(2017·重庆高考单选)

　　打破窗户的是约翰，为什么你说得好像是我打破的似的？

　　Ⅰ.基础点全练

　　1．单句语法填空

　　①I'm sure he is up to the new job, because he is an experienced driver.

　　②I know you are tired after a long walk, but try to hang on a bit longer.

　　③Li Na is known as a great Chinese tennis player, who retired in September, 2017.

　　④The teacher asked the students to make up short dialogues by themselves.

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