强调句

it的用法

1.it可用来对句子谓语以外的某一成分进行强调，强调句的基本句型为：It+be+被强调的部分+who（m）/that+其他部分。例如：

    It was yesterday that Jack met your sister in the park.杰克是昨天在公园遇见你妹妹的。

2.被强调的部分是主语时，用who（人）/that（人或其他）；被强调的部分是宾语时，用whom（人）/that（人或其他）；被强调的部分是状语时，用that。例如：

    It was you who had been wrong.错的是你。

    It was Nancy whom you should ask.你因该问的是南希。

    Who was it that called the meeting？这会议是谁召开的？

    It’s me that he blamed.他责怪的是我。

    It was here that he differed from an Englishman.他和英国人的不同就在于此。

3.从结构上看，把强调句的句型去掉，剩下的仍能表达完整的意义。例如：

    It was from Betty that he first heared the news.这消息他最早是从贝蒂那儿听来的。（强调句，内容相当于He first heared the news from Betty.）

4.强调句的疑问句式

（1）一般疑问句的强调句式：

    Was it at eight o’clock that you began to work?

    Is/was it +强调句部分+that/who/whom+其他部分

（2）特殊疑问句的强调句式

    When and where was it that you were born？

    疑问句（被强调部分）+is/was it +that +其他部分

Not …until…. 的强调句式

It is not until +被强调部分+that…..”直到…..才……”主要用于强调时间状语的强调句型

    I didn’t realize she was a famous film star until she took off her dark glasses..

    ——>Not until she took off her dark glasses did I realize she was a famous film star.

    ——>It was not untl she took off her dark glasses that I realize she was a famous film star.