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。
例子 It was yesterday that he met Li Ping.
同上，只是把is/ was提到it前面。
例子 Was it yesterday that he met Li Ping?
3. 特殊疑问句的强调句型
例子 When and where was it that you were born?
4.not … until … 句型的强调句
A. 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.
B. 注意：
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。
A. It is/ was … that … 结构不能强调谓语，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!
B. 注意：
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形。
强调形式
常见到的强调形式，共有以下七类：
⒈用do\does\did + V可表强调
Some people do believe that nuclear power poses a threat to the world peace.
⒉adv或adj可表强调：Never \ only\ Very
This is the very question that deserves careful analysis.
⒊双重否定可表强调
Taking part-time jobs is never without drawbacks.
⒋what引导的主从可表强调
What really matters is cooperation.
⒌倒装可表强调(凡是倒装都可以表示强调)
Little do people take into account the seriousness of this problem.
Nothing is more imperative than to learn from the past.
⒎强调句型可表强调
It is \was +被强调部份+ that \ who +原句剩余部份
It is stability that destroys people’s ambition and barricades people’s steps.
语法结构
强调句的十种结构：
1.用助动词“do(does/did)+动词原形”来表示强调：
Do write to me when you get there.你到那儿后务必给我来信。
How dare you buy such expensive jewels?你怎么敢买这么贵的宝石呢?
3.用ever，never，very，just等副词和badly，highly，really等带有-l y的副词来进行强调：
I really don’t know what to do next.我的确不知道下一步该怎么做。
Where in the world could he be?他到底会在哪儿?
How interesting a story it is!这是一个多么有趣的故事啊!
6.用重复来表示强调：
Why!why!The cage is empty!啊!啊!箱子是空的。
On the table were some flowers.桌上摆着一些花。(强调地点)
8.用强调句型：“It is(was)+被强调的部分+that(who)+原句其它部分”来强调说话人的意愿：
It was on Monday night that all this happened.所有这一切发生在周一晚上。
9.用If来表示强调：
1)If从句+I don’t know who/what，etc.does/is/has，etc.
主语部分也可以用nobody does/is/has，etc.或everybody does/is/has，et c.来代替(这里的if从句往往是正话反说，反话正说)：
If he can’t do it，I don’t know who can.要是他做不了这件事，我不知道还有谁能做。(强调只有他能做) If Jim is a coward，everybody is.要是吉姆是个胆小鬼，那么人人都是胆小鬼。(强调吉姆不是胆小鬼)
2)if从句+it be主句(此用法可看成是第8中强调句型的变形，即把所要强调的内容放在it be的后面，把其它内容放在由if引导的从句中)：
If anyone knew the truth，it was Tom.如果说谁了解事实的真相，那便是汤姆。
10.用破折号、黑体字也可以表示强调，加强语气：
It’s because of hard work—ten years of hard work.那是因为艰苦的工作–十年艰苦的工作!
He began the work in late May.他在五月底开始的这项工作。(强调时间)
注意事项
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。
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