2022年名词性从句的用法 .pdf
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1、名词性从句的用法名词性从句包括主语从句?表语从句 ?宾语从句和同位语从句?引导名词性从句的连词有:who ;whom ;whose; what ;which ; when;where;why;how; that ;if ;whether ;whatever ;whenever;wherever ;however 等 ?名词性从句注意事项: 从句的语序为陈述句;连词that 不充当任何成分;what 总是要充当主语 ?表语 ?宾语等 ?if和 whether 的区别 :if引导宾语从句和条件状语从句;whether 引导主语从句 ?表语从句 ?宾语从句和同位语从句?( 一) 主语从句用作主语的从
2、句,叫主语从句 ?主语从句可以直接放在句首;也可用 it作形式主语, 而将从句放在句末?常见的用 it作形式主语的复合结构: It is + 名词 + that从句; It is a fact(a pity,a shame,no wonder ,good news.)that. It is + 形容词 + that从句; It is necessary(strange,important,wonderful ,possible,likely,.)that. 这类句中谓语动词多为(should) + 动词原形 ?It is + 过去分词 + that 从句;It is said(reported
3、, decided , believed, .)that. It + 不及物动词 + that 从句; It seems(happened,doesnt matter,has turned out ,.)that. What you need is more practice. 你需要的是更多的练习?(what 在从句中作need 的宾语 ) What is hard is to do good all ones life and never do anything bad. 难的是人的一生都做好事?从不做坏事 ?(what 在从句中作主语) What he will be in the fu
4、ture is known to us. 我们知道他未来会干什么?(what在从句中作be 的表语 ) Who will go makes no difference. 谁去都一样 ?How this happened is not clear. 这件事是怎样发生的还不清楚?Why he did that wasnt quite clear. 他为什么那样做相当不清楚?Whether she will join us wont make too much difference. 她是否加入我们没多大区别 ?( 此处不能用if) Whoever comes will be welcome. 不管
5、谁来都受欢迎?(whoever 在名词性从句中相当于 anyone who) Whatever she did was right. 不管她做什么都是正确的?(whatever在名词性从句中名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 1 页,共 4 页 - - - - - - - - - 相当于 anything that) It is possible that I may not be able to come. 可能我不能来了?(it是形式主语,真正的主语是that I m
6、ay not.部分 ) It doesnt seem likely that she will be here. 看来她不会来这了?Isn t it strange that he should have left without telling us?他没有告诉我们就离开了,难道不奇怪吗? It occurred to me that he had forgotten to take his notebook with him. 我想起来,他忘记随身带笔记本了?That we need more equipment is quite obvious. 很明显,我们需要更多的设备?Has it
7、 been announced when the planes are to take off?已经宣布飞机什么时候起飞了吗 ? ( 二) 表语从句用作表语的从句叫表语从句?它位于连系动词( 如 be,seem,remain 等后 ) ?The question is whether we should accept their invitation. 问题是我们是否应当接受他们的邀请?The city is no longer what it used to be. 这个城市不再是曾经的样子?This is why we put off the meeting.(why表结果 ) 这就是为什
8、么我们推迟了会议?That is because he was ill.(because表原因 ) 那是因为他生病了?The reason for his absence was that he was ill.(此处不能用because 代替 that . 句型 :The reason. is that.)他缺席的原因是他生病了?as if 引导的表语从句有时可用虚拟语气,表示可能性小?He acted as if he hadnt eaten for a long time. 表示建议 ?命令 ?要求一类的表语从句要用虚拟语气: My suggestion is that you shou
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