1、名词性从句教学内容一、同步引入Whateverwillbe,willbe世事皆有规律，顺其自然。这个句子是英语中的名言，那么我们来分析一下这个句子。二、同步精讲主语从句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
2、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
3、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
4、 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引导的让步状语从句的区别如：Whoever breaks the law should be punished. （主语从句）（＝Anyon
5、e who breaks the law should be punished. ）Whoever breaks the law, he should be punished. （让步状语从句）（＝No matter who breaks the law, he should be punished. ）3. it构成的主语从句（1）由连词that引导的主语从句，在大多数情况下会放到句子的后面，而用代词it作形式主语。如：It is well-known that the earth moves around
6、the sun. 众所周知，地球围绕太阳转。【拓展延伸】需要注意的是，it作形式主语代替主语从句时，要注意和as引导的定语从句的区别。试比较：It was reported that the US was under the terrorist attack. （主语从句，有that，无逗号）As was reported, the US was under the terrorist attack. （定语从句，无that，有逗号）上两句意为“据报道，美国遭到恐怖分子的袭击”（2）常见用it作形式主语的复合句
7、结构It is a fact （a good idea / a pity / a shame / no wonder / good news…）that…如：It’s a pity that you missed the film. 你没有看那部电影真是太遗憾了 It is necessary （clear / true / strange/ important /wonderful / possible / likely…）that…需要注意的是，这类主语从句中，谓语动词很多为“（should）＋动词原形”，
8、如：It is necessary that you （should）master the computer. 你很有必要掌握电脑It is important that a student learn English well. 学生学好英语很重要It’s clear that they badly need help. 很明显，他们急需援助It is likely that a h
