三、 强调含有 not until 的句子。在强调 not until 句型时，not 位于 until 从句前，主句 谓语动词作相应变化，即 it is(was)+not until 从句+that +其它。
It was not until he had finished the work that he went home. It was not until 12 o’clock last night that my brother came home.
五、强调句型中的主谓一致。被强调的成分为原句的主语时，that/who 之后的谓语动词 应与被强调的名词或代词在人称和数方面保持一致关系，从而选用恰当的动词形式。例如 ： It is you who/that are wrong. It is I who/that am answering the question.
有时，be 前可使用表示推测的情态动词。如： It must be Peter who has let this secret out.一定是彼得将这个秘密泄露出去的。 It might be last night that they did their homework.他们也许是昨晚做完作业的。
It was in the street that I met him yesterday. 二、时态。如果原句中谓语动词使用的是现在范畴的时态(一般现在时、现在进行时、现
在完成/现在完成进行时、一般将来时、将来进行时、将来完成时等)，用 It is...that...。如果 原句中谓语动词为过去范畴的时态(一般过去时、过去进行时、过去完成时、过去将来时等)， 则用 It was...that...。如： Mary met an old beggar in the street yesterday. It was Mary who/that met an old beggar in the street yesterday. (强调主语) It was an old beggar whom/that Mary met in the street yesterday. (强调宾语) It was yesterday that Mary met an old beggar in the street. (强调时间状语) It was in the street that Mary met an old beggar yesterday. (强调地点状语)
四、强调句的疑问句。强调结构的疑问形式：强调一般疑问句中的某一成分时，要在主 句中用一般疑问句的顺序。例如：
Was it you that/who broke the window ? Was it in the war that he lost his son ? 强调特殊疑问句中的疑问词，其结构模式是：“疑问词+ is/was + it +that...”。它同感叹句 的强调模式极其相似，首先将疑问句开头的部分作为强调部分，套入强调结构，然后再将其 变为疑问句。例如：
5. It was with great joy （2004 福建卷)
he received the news that his lost daughter had been found.
A because 6. An awful accident
B which
C since
D that
, however, occur the other day. (2000 上海卷)
A. is it that B. was it which C. it is what D. it was that 10. How many years is it＿＿＿＿＿＿your sister came to work here﹖
A. after B. since C. before D. until 11. Is it in the factory＿＿＿＿＿＿＿＿you visited last week＿＿＿＿＿＿＿＿this kind of car is
the two friends met in Viet Nam.
D. Why was it
2) It will be 20 years
they meet in Viet Nam.
3) It is 20 years
he came to live here.
4) It was 20 years
he spent in writing this novel.
he chose the course.
A. that
B. what
3. It is these poisonous products
aching muscles. （2003 上海卷）
C. why
D. how
can cause the symptoms of the flu, such as headache and
1. Where were you born? → Where was it that you were born? 2. What did you want to see? → What was it that you wanted to see? 3.How many people are being trained for the special work? → How many people is it that are being trained for the special work ?。
1. How happy he looks! → How happy it is that he looks! 2. What a clever boy he is! → What a clever boy it is that he is!
七、强调句型的鉴别方法及相似句型的辨析 强调句型极易与定语从句、名词性从句、状语从句等相关句型混淆，判断的方法是： 强调句型中去掉It is/was…that剩下的部分在语法和意义上仍然是一个完整的句子。如：Itwas yesterday that I met him. 去掉句中的 It was …that 该句为：Yesterday I met him. 句意和语法 都非常正确，说明这是一个强调句。而其他句型则不行。
A. It is
B. They are
C. That is
D. There are
2. It is
he often fails in exams
makes his parents worried about him.
A. what; that
B. that; what C. that; that
D. / ; that
但是如果被强调的部分是人称代词，按理应用人称代词主格形式，但在口语或非正式文 体中也可以用其宾格形式，此时 that/who 的谓语动词要用单数第三人称形式 is 或 was。例如： It is me who is being asked the favor. 另在 It is/was..., not...that...句型中，其谓语动词应与肯定部分的词保持一致关系。例如：
he came back home.
A. when
B. that C. since
D. after
7. It was not until he came back
he knew the police were looking for him.
A. which
B. since C. that
D. before
学海无涯
It is my brother, not I that studies in that school. It is you, not your sister that are in charge of the company.
六、感叹句的强调结构，既要体现强调句型的形式特征，又要体现感叹句的自然语序。 例如：
black home after the experiment. (2004 湖北卷)
A. not until midnight did he go
B. until midnight that he didn’t go
C. not until midnight that he went
D. until midnight when he didn’t go
9. —
that he managed to get the information?
—Oh, a friend of his helped him. （2005 山东卷）
A. Where was it
B. What was it
C. How was it
10.1) It was 20 years ago
A .who
B. that
4. Why! I have nothing to confess.
C .how
D .what
you want me to say? （2004 上海卷）
A. What is it that
B. What it is that
C. How is it that
D. How it is that
5) It was not long
the people in Austria took up guns.
6) It was midnight
he came back home.
A. when
B. before
C. since
D. That
学海无 涯
练习一：
1.—Who are making so much noise in the garden?