▲ 强调句型的基本结构。
it is/was +被强调部分+that-clause.
语言单位均可被强调。
强调句型的基本应用：
原句：tom cleaned the classroom yesterday with jean.
强调主语：it wascleaned the classroom yesterday with jean. (tom that/who)
强调宾语：it wastom cleaned yesterday with jean. (the classroom that)
强调时间状语：
it wastom cleaned the classroom with jean. (yesterday that)
强调方式状语：
it wastom cleaned the classroom yesterday. (with jean that)
结论：仔细分析一下原句与各强调句的关系，我们不难发现这样一个秘密：若去掉it was that三词，则各强调句恢复原句。
这说明it was that不仅具有语法功能，起到强调的作用，而且还具有符号功能。即：若有此三词，则有理由判断某句为强调句型；反过来，若某句为强调句型，则必有此三词。
可以说这个“金三点”是判断和应对强调句型的不二法门。
强调句型的各种考法。
一、 疑问法：疑问法可分为一般疑问法、特殊疑问法和疑问词序法。
一般疑问法：is __student __was caught smoking in the classroom? (it that, that)
特殊疑问法是什么时候) he got up? (when was it that)
其他特殊疑问法。
1是在哪儿）he picked the wallet? (where was it that)
2是什么）he did? (what was it that)
3是谁）he taught? (who was it that )
4是谁的学生）you referred to? (whose student was it that)
疑问词序法：
i don’t know是多久) that you will stay here. (how long it is)
结论：一要注意词序；二要注意语序（特殊疑问词要置于句首或在宾语从句中居首），三要注意特殊疑问词的选用，疑问代词还是疑问副词。
二、强调not until结构。
it was直到他回来) that i left for qingdao. (not until he came back)
三、 相似句型法：
it is 20 years ago that two friends met in viet nam.
it will be 20 years before they meet in viet nam.
it is 20 years since he came to live here.
it is 20 tears that he spent in writing this novel.
强调句型：因spend一词为及物动词，故需要宾语that。但此例是一临界例句。它有可能是强调句型，亦有可能是定语从句，若为定语从句则which亦可。)
it was not long before the people in austria took up guns.
四、 强调主语：
1. it’s actually the ******r ones of a camera phone是最有趣的). that are the most interesting)
2. _is it __has made tom __he is todayd)
a. what, that, that b. that, that, what c. what, what, that d. what, that, what
注意what是has made的主语，that有特殊的地位。而后面的what则引导名词性从句作made的宾语补足语，并在名从中作is的表语。）
结论： 认清主语，把握一致。
五、强调从句。
1. it was___my teacher worked __i worked hard (a)
a. where, that b. where, where c. that, that d. that, where
该句原为一个带地点状语从句的主从复合句：i work hard where my teacher worked.状语从句一经强调，此句就显得复杂。
有的考生甚至连句意都未能搞懂，所以，必须压有还原的本领。要领就是去掉it was that这三个词。)
2. it was __the teacher lectured in class __that student spoke loudly. (a)
a. when, that b. when, when c. that, that d. that, when
此句为上句的模仿，但考的是时间状语从句，只要去掉it was that 即可。)
3. it was __the president, george bush, would come to visit china___known to us all.
a. that, what was b. which, that was c. that, that was d. which, that were (c)
此句要特别注意主语从句中原有的that引导词， 另外要小心单复数的问题。)
六、改变句式：
do you happen to know __the old scientist was hit by a car?
a. where was it that b. where it was that c. it was where that d. was it where that (b)
首先，该强调句是作为know的宾语出现的，所以，词序是从句词序，无倒装。但由于该强调句原为特殊疑问句，其疑问副词应置于句首。当然，还得看看“金三点”it was that是否全。)
七、强调句型和定语从句的关系：强调句型与定语从句根本的区别在于关系词that上。在定语从句中，that仅有语法功能，即在从句中充当一个代词的角色，而且其在从句中充当宾语时可以省略。
但在强调句型中，that的语法功能和符号功能同等重要。
1. it is on a winter night __his wife left him without saying goodbye. (b)
a. which b. that c. when d. in which
2. it was a winter night __his wife left him without saying goodbyec)
a. which b. that c. when d. in which
八、插入法：在强调句型中插入一些有意义或没什么很大实际意义的部分是英美人士常用的表达习惯。由于插入部分的云遮雾罩，考生往往难识别主句的庐山面目。
句式的混杂，插入的繁难直接干扰了考生的正确理解。
it was his mother, _came from hong kong on the last day of 2003,__brought us the news __mei yanfang, a famous actress, _song “lady flower” is so popular __every fan likes it, died of cancer of liver, _made us shocked greatly.
who引导的是非限制性定语从句； that\who是强调句型部分； that为同位语从句部分； whose引导的是非限制性定语从句； that结果状语从句部分； which引导的是非限制性定语从句)
结论：抓住主干，理顺枝桠，结构凸显，句意全出。
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