Question

It was only after he had read the papers ________ Mr. Gross realized the task before him was extremely difficult to complete.

A. whenB. thatC. whichD. what

Answer

B

【解析】

试题分析：考查强调句式。题干的意思是：“直到他读了文件之后，格罗斯先生才意识到他面前的任务非常难完成。”本句为强调句型，强调状语only after he had read the papers。根据强调句结构“It is/was＋被强调部分＋that＋剩余部分．”可知选B。此外，我们也可以将It is/was与空格去掉来验证此句是不是一个强调句。

【学法指导】

强调句型的用法

1.在英语中，我们常用It is/was… who/that结构来突出强调句子的某一成分(一般是句子中主语，宾语或状语)。在这个句型中，it没有词汇意义，只是引出被强调的成分。如果被强调的成分是表示人的词，用who或that来连接都可以。如果是其它成分，则一律用that来连接。It is my mother who/that cooks every day.是我的妈妈每天做饭；It was yesterday that Tom passed in the maths exam.是昨天汤姆通过了数学考试。

2.被强调成分是主语，who/that之后的谓语动词应该在人称和数上与原句中的主语保持一致。It is I who am right.It is he who is wrong. It is the students who are lovely.

3.被强调部分既包括人又包括物，用that不用who。lt was the things and people that they remembered that they were talking about.

4.区分定语从句和强调句型某些定语从句和强调句型形式差不多，容易混淆。如果去掉it is/was ...that句子仍然通顺成立，则为强调句型，不成立不通顺，则为定语从句。It was three years ago that he went to American for a further study去掉It was that句子为Three years ago he went to America for a further study.句子通顺，意思完整，那么，这就是一个强调句型。

考点：考查强调句式