UKiset语法盲点：名词性从句重点与难点

　　UKiset英语测试学生的词汇、语法、阅读、写作等基本技能。英国私校教育质量好，对国际生申请的要求也高。既然入读英国私校，那就要抱着严谨、认真的态度去备考。今天课窝网要分析的知识点是关于语法中名词性从句重点与难点。

　　一、that从句作主语和宾语时，常用it作形式主语，将从句放在句末

　　e.g. It doesn’t matter so much whether you will come or not.

　　She has seen to it that all the children are well taken care of.

　　二、that引导名词性从句的省略情况

　　1、that引导主语从句、表语从句、同位语从句时，不能省略。

　　e.g. That he suddenly fell ill last week made us surprised.

　　2、that引导宾语从句时一般可省略，但在以下几种情况中不能省略。

　　1)当that从句和主句谓语动词之间有插入词语或者从句主语之间有插入语时不能省略;

　　2)当that 从句与另一名词性从句并列作宾语时不能省略;

　　3)当that作介词宾语时不能省略。

　　e.g. He judged that, because he was a child, he did not understand wine

　　Everyone knew what happened and that she was worried.

　　The reason lies in that she works harder than the others do.

　　三、名词性从句中的语序

　　名词性从句中一律使用陈序语气。

　　e.g. He asked how much I paid for the violin.

　　四、名词性从句中的时态呼应

　　在名词性从句中，谓语动词的时态要与主句谓语动词的时态相一致。

　　e.g. As soon as he comes back, I’ll tell him when you will come and see him.

　　He kept looking at her, wondering whether he had seen her somewhere.

　　Can you make sure where Alice has put the gold ring?

　　五、名词性从句中虚拟语气的使用情况

　　1、在表示“命令、建议、坚持、要求”的名词性从句中，要用“should+动词原形”形式，should可以省略。

　　e.g. I made a suggestion that he (should) go there at once.

　　I suggested that he (should) go there at once.

　　The suggestion was that he (should) go there at once.

　　2、wish引导的宾语从句中要用虚拟语气，分与现在、过去、将来相反三种情况。

　　e.g. I wish I were ten years younger.

　　I wish you had posted the letter yesterday.

　　I wish I would try again.

　　3、在句型“It + is/was + adj.+主语从句”中，如果形容词是important, strange, natural, necessary等，从句谓语部分要用“should+动词原形”形式，should可以省略。

　　e.g. It’s strange that he (should) think so.

　　It is necessary that he (should) go there at once.

　　六、引导同位语从句与定语从句的that的区别

　　同位语从句中的连词that只起连接作用，不充当任何句子成分且不能省略，同位语从句一般放在有具体含义的名词后，用以解释名词的含义或内容;而定语从句中的关系代词that在从句中充当主语或宾语，在充当宾语时常可省略，定语从句是对先行词的限定和修饰。

　　e.g. They expressed the hope that they would come to visit China again.

　　The hope she expressed is that they would come to visit China again.

　　七、引导名词性从句的that和what的区别

　　that 引导名词性从句时，在从句中不充当任何句子成分，也没有任何含义，只起连接作用, 且在宾语从句中有时可省略;而what引导名词性从句时，在从句中充当主语、宾语、表语或定语。

　　e.g. That he said so made us angry .

　　What he said at the meeting made us angry.

　　China is no longer what it used to be.

　　八、疑问词 + ever和no matter + 疑问词的区别

　　1、疑问词 + ever既可引导名词性从句，又可引导让步状语从句。

　　e.g. Whoever breaks the rule must be punished.

　　Whoever breaks the rule, he must be punished.

　　2、no matter + 疑问词只能引导让步状语从句。

　　e.g. No matter who breaks the rule, he must be punished.

　　No matter what you do, you must do it well.

　　注意：who与 whoever的区别

　　who是“谁”的意思，表示具有疑问，who相当于anyone who“无论谁”

　　He gave whoever came to the door a smile. = He gave any person who came to the door a smile.

　　比较：He asked me who broke the glass.(正确) 他问我是谁打的玻璃。

　　He asked me whoever broke the glass.(错误)

　　Whoever goes against law shall be punished.(正确) 违法的人将受罚。

　　Who goes against law shall be punished.(错误)

　　九、注意区分it 作形式主语的主语从句与强调句

　　强调句句型It is/was+被强调部分+that, 去掉It is/was, that，句子仍然成立。

　　It is natural that they should have different views. 主语从句

　　It is only lately that he had had a family himself. 强调句

　　What was it that he wanted? I don’t know what it was that he wanted.

　　It was in the hotel where he stayed that we discussed the serious problem

　　十、比较：whether与if

　　均为"是否"的意思。 但在下列情况下，whether 不能被if 取代：

　　1、whether引导主语从句并在句首

　　Whether he left (or not) is unknown

　　2、引导表语从句

　　The question is whether they will be able to help us.

　　3、whether从句作介词宾语

　　It depends on whether we have enough time.

　　4、从句后有"or not"

　　Whether he will come or not is not clear.

　　5、不定式之前

　　She can't decide whether to buy the house or wait.

　　她不能决定到底是应该买下这个房子还是再等等。

　　6、同位语从句中

　　There is doubt whether he will come.

　　7、宾语从句前移

　　Whether she will win the game, I’m not sure.

　　以上就是小编为大家整理的关于UKiset语法知识点。更多UKiset南京培训、UKiset写作高分等问题可以咨询我们。