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2019-2020年高考英语一轮复习Module3unit4教学案新人教版Module3unit4第二课时【基础过关】1.定义主语从句在复合句中充当主语的句子叫主语从句例如How he was successful is still a puzzle. 他是如何成功的仍然是个谜
2. 连接词的选用
(1)that和what的选用that和what都可引导主语从句what除起连接作用外,还在名词性从句中充当某些成分,可作从句的主语、宾语或表语而that在名词性从句中不充当任何成分,无词义,只起连接词作用如What he wants is a book. 他想要的是一本书That light travels in straight lines is known to all. 众所周知,光线沿直线运行
(2)if和whether的选用引导主语从句,不能用if,只能用whether如Whether we will hold a party in the open air tomorrow depends on the weather. 我们明天是否在户外开晚会要看天气而定
(3)其它连接代词和副词的选用根据主语从句的具体意义,正确的选择who which when where why how等连接词,这些连接词既有疑问含义,又起连接作用,同时在从句中充当各种成分如When we shall hold our sports meet is not decided. 我们何时举行运动会还没有决定Who broke the glass yesterday is not clear. 还不清楚昨天谁打破了玻璃Which car you will choose to buy makes no difference. 你决定买哪一辆车都不会有任何区别
(4)whatever / whoever的功用whatever whoever在主语从句中不含疑问意义它引导主语从句,并在从句中作主语、宾语、表语等whatever = anything that; whoever = anyone who要注意和whatever whoever引导的让...。