《【高考聚焦】届高三英语一轮复习课件语法篇从句》-公开课件.ppt

　14.(2012·陕西，20)As many as five courses are provided, and you are free to choose ______ suits you best. A. whatever B. whichever C. whenever D. wherever 【解析】B　本题考查宾语从句。句意：提供给你多达5门课程，你可以自由选择最适合你的课程。宾语从句中缺少主语，故排除C、D两项。因为前面已提到有5门课程，是有范围的，故用whichever，而whatever是没有范围的，不符合题意。 　15.(2012·浙江，4)I made a promise to myself ______ this year, my first year in high school, would be different. A. whether B. what C. that D. how 【解析】C　本题考查同位语从句。句意：我自己许诺，今年，我在高中的第一年，会不平凡。本句是同位语从句，说明promise的内容。且从句中不缺少句子成分，故用that引导。 　16.(2012·湖南，26)Everyone in the village is very friendly. It doesnt matter ______ you have lived there for a short or a long time. A. why B. how C. whether D. when 【解析】C　句意：村子里的人都很友好，所以你住在那里时间长还是短都没关系。it是形式主语，真正的主语是whether引导的名词性从句。 　17.(2011·江苏，26)It was never clear ______ the man hadnt reported the accident sooner. A. that B. how C. when D. why 【解析】D　句意：那个人为什么没有早报告这起交通事故的原因还不清楚。分析结构可知，it作形式主语，真正的主语为后面的从句。又由句意可知此处主语从句用why引导，故D项正确。 　18.(2011·湖南，31)Before a problem can be solved, it must be obvious ______ the problem itself is. A. what B. that C. which D. why 【解析】A　句意：在一个问题被解决之前，必须弄清问题本身是什么。在it must be obvious the problem itself is这一句中，it为形式主语，______ the problem itself is是真正的主语从句，从句缺少表语，故用what引导。 考点一：主语从句 在复合句中作主语，常见的引导词有：连接代词what，who，which等；连接副词when，why，how，where；连接词that，whether。 What young people see and hear in the media helps them to figure out how the world works. 1．that引导的主语从句也可用“it”作形式主语，将从句放在句末。如： That light travels in straight lines is known to us all. Its known to us all that light travels in straight lines. 光沿着直线运行，这是众所周知的。 2．wh-引导的主语从句。如： Where we will go hasnt been decided. 我们要去哪儿还没有定下来。 3．it作形式主语的几个重要