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.

9．I just wonder that makes him so excited.

A. why it does

B. what he does

C. how it is

D. what it is

【答案】D

【解析】【分析】本题题干相当于I just wonder what makes him so excited.的意义, 所以该题实际上为强调句型的特殊疑问句式, what为宾语从句的连接词且在从句中作主语。

10．Was it in the village _____ we used to live in _____ the accident happened?

A. where; that

B. which; that

C. that; where

D. where; which 【答案】 B

【解析】【分析】考查强调句。第一空考查定语从句，先行词是the village，定语从句中不缺主宾表，第二空填that考查强调句，句意：是在我们过去生活的村子发生事故的吗？故B正确。

11．It was _________he came back from Africa that year_________he met the girl he would like to marry.

A. when; then

B. not; until

C. not until; that

D. only; when

【答案】 C

【解析】【分析】句意：直到那年他从非洲回来，他才遇到他想要结婚的女孩。本题考查强调结构的特殊形式：It is/was + not until … that从句。故C正确。

【点评】考查not until在强调句型中的使用，牢记强调句型的基本结构和not until句型。

12．It is not until all the fish died in the river ________how serious the pollution was.

A. did the villagers realize

B. that the villagers realized

C. the villagers did realize

D. didn't the villagers realize

【答案】 B

【解析】【分析】句意：直到河里的鱼都死光了,村民们才意识到污染是多么严重。此处是It is not until ...that...，的强调句型，故答案为B。

【点评】考查强调句型，本题涉及It is not until ...that...的应用。