it is用法的讲解 What is it 的用法小学?

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What

What is it 的用法小学?

is it 的用法小学?

What is it look like它看起来怎么样?

it is语法用法?

It is 可用于强调句、定语从句、主语从句等多种句型,举例如下:
一、It is(was)??that??句型, It is 被强调成分 that 句子剩余部分 (强调句)
可以分别用来强调主语、宾语、地点状语和时间状语。
二、It is 名词 定语从句
三、It is 名词/形容词 不定式主语
四、It is no use 动名词主语
五、It is 名词/形容词 主语从句
六、It 还用于指代时间、距离、价值、天气,以及不明确的人(包括性别不明的婴儿、敲门或打来电话的人。在不知道对方性别前,无法确定该用he还是she,往往用it)。

it is she who 什么从句?

如:
It is she who sings best in my class
.这句子是一个主系表结构.
It 主语
is 连系动词,做谓语
she 表语
who sings the best in my class 同位语从句,she,用来补充说明she的状态
“It is/was 被强调部分 that/who...”
这样的句型,被强调的部分放在前面,其它部分置于that之后。强调的主语如果是人,that可以换用who。
如果把这种句型中的句型结构部分(It )划掉后,是一个完整无缺的句子即是强调句。
如:
It was he who(that)read three books in the library yesterday.
(强调主语)
It was three books that he read in the library yesterday.
(强调宾语)
It was in the library that he read three books yesterday.
(强调地点状语)
It was yesterday that he read three books in the library.
(强调时间状语)
在使用It 强调句型时应注意以下几点:
1、当被强调部分指人时,可用that,也可以用who;指物时,只能用that,
如:
It was Tom who(that)I met last week.
我上周遇见的就是汤姆。
It is a new boke that his brother wants to buy.他的弟弟就想买一个新博客。
2、强调状语时,只有that,不用when、where,
如:
It is at 5 oclock that the train will arrive.
五点钟是火车到达的时间。
3、被强调的部分是主语时,注意主谓语动词和被强调的主语保持一致,
如:
It is he who is late.是他迟到了。
It is they that were late.是他们迟到了。