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当 需要强调句中的主语、宾语、状语时，我们常用“It is(was)+被强调部分
+that(who)”这种句型，使用此句型时，应注意以下几 点。
1.一般情况用 It is(was)……that…如：
He read three books in the library yesterday.
我们分别可以强调主语、宾语、地点状语和时间状语。如：
It was he who(that)read three books in the library yesterday.
(强调主语)
It was 全面从严治党three books that he read in the library yesterday.(强调宾语)
It was in the library that he read three books yesterday.
(强调时间状语)
2.当被强调部分指人时，可用 that，也可用 who；指物时，只用 that,如：
It was Tom who(that)I met last week.
It is a new bike that his brother wants to buy.
3.强调状语时，只用 that,不用 when、where.如：
It is at 5 o'clock that 丧气的近义词the train will arrive.
4.被强调的部分是主语时，注意句子的谓语动词和被强调的主语保持一致。如：
It is he who is late.
It is they that were late.
5.一般疑问句的强调句为:Is (was) it + that …?
特殊疑问句为：特殊疑问词+ is (was) it +that …?结构。如 ：
Was it ten years ago that his father died?（他的父亲是十年前去世的吗？）
When is it that you will t off?（你到底什么时候出发？）
6.注意在强调句的疑问句型中，强调标志 that/who 后只能使用陈述语序 。
比较：Was it by plane that did he come back ?(×)
Was it by plane that he came back? (√)
When was it that the Second World War broke out? (√)
When was it that did the Second World War break out ?(×)
7.强调时间状语和地点状语时与定语从句的区别：
It was in 1921 that our Party was founded.(强调句式)
It was 1921 when our Party was founded.(定语从句)
即：强调时间或地点时有介词置于其前时，则连接词用 that。其前面应有
介词而被省去时，则用连接词 when（时间）或 where(地点)。又如：
It was on the farm that we practid planting crops.
It was the公司车辆管理规章制度 farm where we learned a lot .
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8.not until 结构的强调：
We did not get重力的施力物体 off the我爱劳动作文 bus until it stopped .
It was not until it stopped that we got off the bus.(注意：强调该结
构时 not until 不能分开)
巩固练习：
1.It is the poisonous products______can cau the symptom（症状）
of the flu（流感）, such as headache and aching muscles. (2003 )
A. who B. that C. how D. what
2.________was in 1979 _____I graduated from the university..
A.That ...that that when D. It...when
3.It was for this reason__________her uncle moved out of New York
and ttled down in a small village. (2001 )
A. which B. why cae是什么C. that D. how
4.-Where was it__________the road accident 马来西亚双威大学happened yesterday ?
-In front of the market.
A. when B. that C. which D. how
5.It was not until she had 枇杷花的功效与作用arrived home__________her appointment
with the doctor.
A. did she remember B. that she remembered
C. when she remembered D. had she remembered
6.It was not until 1956__________liberated.
A. that the town was B. did the town
C. was the town D. that was the town
7.Why,I have nothing to confess(招供，供认)._________you want me to
say?
A.What is it that B. What it is that
C.How is it that D.How it is that
8.It was only with the help of the local guide____.
A.was the mountain climber rescued
B.that the mountain climber was rescued
C.when the mountain climber was rescued
D.then the mountain climber was rescued
