It强调句-
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it强调句
强调句的结构：
it is/was +被强调部分+that/who（whom）+句子的其它成分
2.句法功能：
对句子中的主语、宾语、表语、同位语、状语等进行强调。
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)
3.引导词的运用。
一般来说，只用that进行连接，that没有实际意义，只起语法连接作用。指人
时，可以用who/whom(宾格)。
4.时态的运用。
强调句的时态要依原句的时态而定，即原句为过去的某种时态，则强调句中的
be动词就为过去式；原句为现在时态，则强调句中的be动词为现在时态。
5.人称和数的运用。
若被强调的部分是主语，则that和who从句中的谓语动词应该和主语保持一致。
6. not...until句式的强调。
与否定词连用的until短语或从句在被强调时应注意否定转移。
I didn`t realize all my mistakes until you told me yesterday.
对主语进行强调：it was I that/who didn`t realize all my mistakes until
you told me yesterday.
对状语进行强调：it was not until you told me yesterday that I realized
all my mistakes.
对宾语进行强调：it was all my mistakes that I didn`t realize until you
told me yesterday.
7.强调句的疑问句式
1）一般疑问句的疑问句式：
Is/Was it +被强调部分+that/who/whom+从句
Was it in this place that the emperor died
2)特殊疑问句的疑问句式：
特殊疑问词+is/was+it that +陈述句语序
Who was it that wrote these famous plays`
It强调句练习题
一、选择题。
is four years____she came to this college.
was not ____she took off her dark glasses___I realized she was a famous film star.
，that ，that ，when ，then
was only when I re-read his poems recently___I began to like them.
was in the lab ___was taken charge of by did the experiment.
，that ，which ，whom ，where
was___he did___frightened me.
，that ，that ，what ，what
you left your coat
was where was it it where that where
that____against you.
，is ，is ，am ，am
I saw last night at the concert
A. it you
B. not you
C. you
D. that yourself
it during the Second World War____he died
A. that
B. while
C. in which
D. Then
was about 600 years ago____the first clock with a face and an hour hand was made.
A .that B. until C. before D. when
4. It was only when I reread his poems recently_____I began to appreciate their beauty.
A. until
B. that
C. then
D. so
was at the gate____he told me the news.
A. that
B. what
C. which
D. when
was not___she took off her dark glasses___I realized she was a famous film star.
A. when , that
B. until , that
C. until , when D .when , then