英语强调结构

强调结构是\"It is (was)+被强调部分(主语、宾语或状语)+who (that)...\"。一般说来,被强调部分指人时,用who;指事物时用that,但that也可以指人。

1.陈述句的强调句型 。It is/ was + 被强调部分（通常是主语、宾语或状语）+ that/ who（当强调主语且主语指人）+ 其他部分。 It was yesterday that he met Li Ping.

2.一般疑问句的强调句型 同上，只是把is/ was提到it前面。 Was it yesterday that he met Li Ping?

3.特殊疑问句的强调句型 被强调部分（通常是疑问代词或疑问副词）+ is/ was + it + that/ who + 其他部分？ When and where was it that you were born?

4.not … until … 句型的强调句 句型为：It is/ was not until + 被强调部分 + that + 其他部分 普通句：He didn't go to bed until/ till his wife came back. 强调句：It was not until his wife came back that he went to bed。 此句型只用until，不用till。但如果不是强调句型，till, until可通用；因为句型中It is/ was not ... 已经是否定句了，that后面的从句要用肯定句，切勿再用否定句了。

5，谓语动词的强调 It is/ was ... that ... 结构不能强调强调，如果需要强调谓语时，用助动词do/ does或did

Do sit down. 务必请坐。 Do be careful when you cross the street. 过马路时，务必（千万）要小心啊！此种强调只用do/ does和did，没有别的形式；过去时用did，后面的谓语动词用原型。

that后的强调句如果是原因状语从句，从句只能用because引导，不能用since，as或why。

It was because the water had risen that they could not cross the river。

与定语从句的比较◎强调句中的It没有实际意义，It be与that可同时被省略；而定语从句中的It是主语，It be与that不可同时省略； ◎强调句型中be的时态须跟后面句子的时态相一致；而定语从句中主句谓语动词be的时态须由主句的时间确定 ◎强调句将句子中的that不能省略，并且即使前面的名词是事物时，也不能将that换成which；而定语从句中的that作宾语时可被省略，并且当先行词是事物时可用which代替。 ◎当it be后面的时间、地点名词作主语、宾语或表语时，引导词可用that / which；而作其他成分时，引导词须用when / which。如：

(1) It is an English book (that / which) I bought yesterday. 它是我昨天买的书。(本句是对What is that?问句的回答，that所引导的是定语从句，that可被省略) It was the English book that I bought yesterday. 昨天我所卖的就是这本书。(本句相当于对I bought the English book yesterday中an English book进行强调)

(2) It was a room where we used to have meetings. 它是我们过去常在开会的房子。(where 所引导的从句对前面的room进行说明，它是定语从句) It was in the room that we used to have meetings. 过去我们开会就在这间房子里。(in the room是被强调，本句是强调句型)

(3) It is a day when the people celebrate their victory. 这是人们庆祝他们的胜利的日子。 (when所引导的从句对a day进行说明，是定语从句) It was on that day that

people celebrated their victory. 就在那一天，人们庆祝了他们的胜利。(强调on October 1, 1949)

与状语从句的比较◎状语从句句首的It本身就是句子的主语；而强调句首的It不作任何成分也没有实际意义。 ◎状语从句的连接副词that及句子前面的It be不能去掉 ◎状语从句的引导词可以是when / where，而强调句型中的that不能用其他词代替。如：

(1) It is such an interesting book that we all like it very much. 它是一本如此有趣的书，我们大家都非常喜欢。(结果状语主从复合句) It is such an interesting book that we all like very much. 我们大家都非常喜欢的就是一本如此有趣的书。(强调such an interesting book) (比较：It is such an interesting book as we all like very much. 这就是我们大家都非常喜欢的如此有趣的书。定语从句)

(2) It was already morning when he woke up. 当他醒来时，已经是早晨了。(时间主从复合句) It was the next morning that he woke up. 就在第二天早晨他醒来了。(强调the next morning)