如题所述
强调句型的构成是：It is (was) + 被强调部分+ that (who) + 句子的其他成分。被强调的部分放在 It is (was) 之后，其它部分置于that之后。被强调部分可以是主语，宾语，表语或状语。强调的主语如果是人，可以由who代替that。
1. 被强调的成分举例：
原句：Tom found my pen in the classroom yesterday.
强调主语：It was Tom who / that found my pen in the classroom yesterday.
强调宾语：It was my pen that Tom found in the classroom yesterday.
强调地点状语：It was in the classroom that Tom found my pen yesterday.
强调时间状语：It was yesterday that Tom found my pen in the classroom.
2. 强调句型的一般疑问式：
直接把is或was提到it之前即可。例如：
Was it Tom that found your pen in the classroom yesterday?
3. 强调句型的特殊疑问式：
特殊疑问词+ is (was) it + that +句子的其他成分。特殊疑问词即是被强调的成分。例如：
Who was it that found your pen in the classroom yesterday?
4. that (who) 有时可以省略：
这种强调句型中的that或who有时可以省略。例如：
It was my brother (that / whom) you saw the other day.
5. 强调原因状语从句要注意：
若从句由as或since引导，强调时则改为because，这是因为，because引导的原因从句表示的意义非常强烈，符合强调句的目的。例如：
As she got up late, she missed the first bus. 变为：
It was because she got up late that she missed the bus.
6. 强调句的否定转移：
有些否定句在变成强调句时，要把否定转移到被强调的词语之前。尤其是“not... until...”句式的强调要特别注意。例如：
He didn't realize his mistake until the teacher had told him. 变为：
It wasn't until the teacher had told him that he realized his mistake.
【注意】 在强调句式中，虽然not被提前，但“not... until...”句型不要倒装。
高考中强调句型考查热点
考点一：强调句型的基本结构
强调句型“It is / was + 被强调的成份 + that + 其他成份”用来强调主语、宾语和状语等成份。that只起连接作用，不作成份，但不能省略。有时强调的部分比较特殊，如主语从句、状语从句、名词、不定式短语、V-ing的复合结构等。如：
It was in the library that I saw her yesterday. 我昨天正是在图书馆见到她的。
考点二：特殊句式中的强调句型
1. 如果强调的是特殊疑问句中的疑问词，表示“到底”、“究竟”等语气时，就用如下结构：
“特殊疑问词 + is / was + it + that + 该句的其余部分”。如：
How is it that you usually go to work? 你通常是怎样去上班的？
2. 在强调“not... until”结构中由until所引导的短语（或从句）作时间状语时，要用固定的强调句型：“It + is / was + not until... + that + 该句的其余部分”，that所引导的从句中的谓语动词用肯定式。如：
His father didn't come back from work until 12
o'clock. = It was not until 12 o'clock that his father came home form work. 直到12点他的爸爸才下班回家。
考点三：强调句型与时间状语从句、定语从句的判断
强调句型要注意和it代表时间、距离、温度、自然现象、具体事物或人物等时所构成的各种句型的区别。试比较：
It was on March 1 that I had my hair cut. (强调句)
It was March 1 when I had my hair cut. (后面是定语从句)
判断是否是强调句，可采用“还原法”。如果还原为一般句式后，句子各种成份完整，则是强调句。否则不是。如第一句可还原成：I had my hair cut on March 1.
考点四：偶尔考查谓语动词的强调句式
英语中常用助动词do、does或did强调谓语。如：
He did go to the airport yesterday, but he didn't find you. 他昨天确实去了机场，但他没有找到你
1. 被强调的成分举例：
原句：Tom found my pen in the classroom yesterday.
强调主语：It was Tom who / that found my pen in the classroom yesterday.
强调宾语：It was my pen that Tom found in the classroom yesterday.
强调地点状语：It was in the classroom that Tom found my pen yesterday.
强调时间状语：It was yesterday that Tom found my pen in the classroom.
2. 强调句型的一般疑问式：
直接把is或was提到it之前即可。例如：
Was it Tom that found your pen in the classroom yesterday?
3. 强调句型的特殊疑问式：
特殊疑问词+ is (was) it + that +句子的其他成分。特殊疑问词即是被强调的成分。例如：
Who was it that found your pen in the classroom yesterday?
4. that (who) 有时可以省略：
这种强调句型中的that或who有时可以省略。例如：
It was my brother (that / whom) you saw the other day.
5. 强调原因状语从句要注意：
若从句由as或since引导，强调时则改为because，这是因为，because引导的原因从句表示的意义非常强烈，符合强调句的目的。例如：
As she got up late, she missed the first bus. 变为：
It was because she got up late that she missed the bus.
6. 强调句的否定转移：
有些否定句在变成强调句时，要把否定转移到被强调的词语之前。尤其是“not... until...”句式的强调要特别注意。例如：
He didn't realize his mistake until the teacher had told him. 变为：
It wasn't until the teacher had told him that he realized his mistake.
【注意】 在强调句式中，虽然not被提前，但“not... until...”句型不要倒装。
高考中强调句型考查热点
考点一：强调句型的基本结构
强调句型“It is / was + 被强调的成份 + that + 其他成份”用来强调主语、宾语和状语等成份。that只起连接作用，不作成份，但不能省略。有时强调的部分比较特殊，如主语从句、状语从句、名词、不定式短语、V-ing的复合结构等。如：
It was in the library that I saw her yesterday. 我昨天正是在图书馆见到她的。
考点二：特殊句式中的强调句型
1. 如果强调的是特殊疑问句中的疑问词，表示“到底”、“究竟”等语气时，就用如下结构：
“特殊疑问词 + is / was + it + that + 该句的其余部分”。如：
How is it that you usually go to work? 你通常是怎样去上班的？
2. 在强调“not... until”结构中由until所引导的短语（或从句）作时间状语时，要用固定的强调句型：“It + is / was + not until... + that + 该句的其余部分”，that所引导的从句中的谓语动词用肯定式。如：
His father didn't come back from work until 12
o'clock. = It was not until 12 o'clock that his father came home form work. 直到12点他的爸爸才下班回家。
考点三：强调句型与时间状语从句、定语从句的判断
强调句型要注意和it代表时间、距离、温度、自然现象、具体事物或人物等时所构成的各种句型的区别。试比较：
It was on March 1 that I had my hair cut. (强调句)
It was March 1 when I had my hair cut. (后面是定语从句)
判断是否是强调句，可采用“还原法”。如果还原为一般句式后，句子各种成份完整，则是强调句。否则不是。如第一句可还原成：I had my hair cut on March 1.
考点四：偶尔考查谓语动词的强调句式
英语中常用助动词do、does或did强调谓语。如：
He did go to the airport yesterday, but he didn't find you. 他昨天确实去了机场，但他没有找到你
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第1个回答 2020-09-30
强调句型总结
老师叮咛：李辉老师说，想要提高作文水平，掌握正确的语法十分关键！下面的一个例句都是历年真题中最常出现的、最值得同学们优先理解的虚拟语气考点！经过了全网首席高考英语名师李辉老师团队高度认真的整理校对，无错、可信！可供全国各省高中生打印、背诵！
辉哥说：强烈的欲望和企图心，足以摧毁你面前的一切障碍。有时候不是自己不行，而是自己没有把自己逼到绝路上！
一．强调句的类型
1. 对谓语动词的强调
强调谓语动词时，用“do/does/did＋动词原形”来表示，意为“确实，一定，肯定”。
如：Do be careful when crossing the street.
The train does move.
They did come to see you yesterday，but failed to meet you.
2. It强调句型
1） It强调句型的基本形式
It强调句型最基本的句式结构为：It be＋被强调部分＋that/who＋句子
被强调部分是除谓语之外的其他句子成分，可以是单词、短语，也可以是从句；当强调人时，可以用who 或that；强调其他成分，则只能用that。
如：It is I who/that am right. （强调主语）
2） 对not...until...结构的强调
句型为：It is/ was not until+被强调部分+that+其他部分。
I didn't realize she was a famous film star until/till she took off her dark glasses.
→It was not until she took off her dark glasses that I realized she was a famous film star.
注意：强调句只用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。
3. 强调句的一般疑问句和特殊疑问句
（1） 强调句的一般疑问句的基本句型为：
Be＋it＋被强调部分＋that/who＋句子其他成分
如：Is it Professor Wang who teaches you English?
（2）强调句的特殊疑问句的基本句型为：
特殊疑问词＋be＋it＋that/who/whom＋句子其他成分
如：What is it that you want me to do?
注意：强调句的特殊疑问句用于名词性从句中，要用陈述语序。
I have no idea when it was that I lost my wallet.
4. 含有情态动词的强调句的疑问句结构
（1） 一般疑问句的基本强调句型为：
情态动词或助动词＋it＋be＋被强调部分＋that＋句子其他成分
如：Might it be in the office that she left her keys?
（2）特殊疑问句的基本强调句型为：
特殊疑问词＋情态动词或助动词＋it＋be＋that＋主语＋句子
如：Where might it be that the accident happened?
5. 强调句型应注意的问题
(1) 谓语动词人称和数的一致性。
在强调句中，如果强调的是句子的主语，其后谓语动词应和被强调部分的人称和数保持一致。
如：It is Mary and Tom who often do good deeds.
(2) 强调时间、地点、原因、方式状语时，一律用that，不用when，where，why，how。
如：It was because he was ill that he was absent.
(3) 强调句型的反意疑问句，其问句部分用isn't/wasn't it。
如：It was yesterday that he met Li Ping,wasn't it?
(4) 当原因状语从句由as，since等引导时，强调原因状语应改as，since为because，即只能强调由because引导的原因状语从句。
如：It was because he didn't know much about English that he looked up the word in the dictionary.
二.灵活运用
1. ---Today Mary is in low spirits.
--- Yes, but she won't say bothers her.
A. why is it that B. that is why
C. it is what D. what it is that
2. ---Who are making so much noise in the garden now?
--- the naughty children.
A. It is B. They are
C. That is D. There are
3. It was__ he_ said disappointed me.
A. that;what B. what;that
C. that;which D. which;that
4. It was only after he had read the papers Mr. Gross realized the task was extremely difficult to complete.
A. that B. when
C. which D. what
5.Is it he or you in charge of the job and supposed to complete it punctually?
A. who is B.that is
C. who are D. whom are
6. Was it through Mary was working at a high school you got to know Tom?
A. who; whom B. that; which
C. who; that D. that; who
7. It's not what we do once in a while shapes our lives, but what we do consistently.
A. which B. that
C. how D. when
8. It is in Canada, where Doctor Bethune was born, the story of the book takes place.
A. where B. when
C. that D. which
9. It was in the lab was taken charge of by Professor Smith they did the experiment.
A. which; that B. that; where
C. that; which D. where; that
10. It is only when people live on very limited diet it is necessary to make a special effort to supply the missing vitamins.
A. so B. that
C. since D. until
11. It is at Christmas thousands of young people go skiing in the mountain.
A. how B. which
C. when D. that
12. (2016.天津卷) You are waiting at a wrong place. It is at the hotel the coach picks up tourists.
A. who B. which
C. where D. that
13. --- I'm sorry. I shouldn't have been shouting at you.
--- You your temper but that's all right.
A. have lost B. had lost
C. were losing D. did lose
14. It is what you think about not what you have or what you are doing makes you happy or unhappy.
A. what B. that
C. whether D. when
15. It was as a result of his carelessness a serious fire broke out during the night.
A. when B. that
C. before D. since
16. It was not until the entire river was covered with rotten fish which died from acid rain that
how serious the pollution was.
A. did the villagers realize B. made the villagers realize
C. the villagers realized D. realized the villagers.
Answer
1.D
[解析]
考查宾语从句和强调句型。句意：——今天玛丽情绪低落。——她不会说是的，但不会打扰她。 但她不愿说出困扰她的是什么。此处动词say后面是宾语从句，引导词即起引导作用又做宾语从句的主语，宾语从句应该由what引导;同时此处又是对引导词的强调，it is 强调部分that....故选D
2. A
[解析] .
考查强调句结构。句意：一现在谁在花园里制造这么多噪音？一是淘气的孩子们。答语中只给出了被强调成分，that / who以及其后部分省略了。故选A。
3.B
[解析]
句意：正是他说的话让我很失望。这是一个强调句型，"it is/was that..是 固定搭配，"what he said"是被强调部分，你可以发现去掉"it was that后，句子仍然完整。"what he said做主语，主语从句中"said"缺宾语用what补足，故选B。
4.A
[解析]
考查强调句。句意：直到他看完这些文件，格罗斯先生才意识到完成这项任务极其艰巨。强调句结构为It is/was +被强调部分+that/who +句子其他部分。本题强调状语only after he had read the papers 故选A。
5. C
[解析]
考查强调句和主谓一致。句意：是你还是他负责这个工作都应该准时完成这个工作？这是强调句的一般疑问句，因为是强调的是人，连接词用that 和who都可以，由or连接两个以上主语时，动词和最接近的主语一致，由此可以排除A和B; whom引导定语从句时在从句中作宾语，所以排除D。故C选项正确。
6. C
[解析]
考查定语从句及强调句。句意：你是不是通过正在高中工作的玛丽认识汤姆的？第－ －空引导限制性定语从句，修饰先行词Mary，并在从句中作主语，故用who；第二空用that，与Was it through Mary起构成强调句的一般疑问形式，被强调部分是作方式状语的介词短语：through Mary 故C项正确。
7. B
[解析]
考查强调句。句意：并不是我们偶尔做的事情塑造我们的生活，而是我们坚持做的事情塑造我们的生活。这个句子中含有It's， 首先要考虑它是不是强调句，把It's和空格处去掉，这个句子仍然结构完整，语意清楚，所以这个句子就是强调句，所以填that, 故选B。
8. C
[解析]
考查强调句。句意：在加拿大，白求恩医生出生在那里，书中的故事发生在那里。分析句子结构，可知where Doctor Bethune was born为定语从句修饰Canada。 the story of the book takes place in Canad强调in Canada用It is.. .that...结构。故选C项。
9. A
[解析].
考查限制性定语从句和强调句。句意：就是在由史密斯教授负责的实验室里，他们做的试验。第一个空格处是定语从句，先行词为the lab, 指物，且从句缺主语，故可填which或that。 第二个空格处是强调句，使用的是It was...that句型， 去掉句型句子可还原为they did the experiment in the lab句子成分完整。故第二个空格处填that。故选A。
10. B
[解析]
考查强调句。句意：只有当人们以非常有限的饮食为生时，才有必要做出特别的努力来供应缺少的维生素。分析句子结构可知应为it is 强调时间状语+___ .+ 其他内容，应为强调句结构，因此所填空应为that。故选B项。
11. D
[解析]
考查强调句中的引导词。句意：就是在圣诞节有成千.上万的年轻人去山，上滑雪。强调句型的基本结构是It be+被 强调部分+that （被强调的是人可以用who) +其它，其判断方式是：去掉“it be...that句子完整；本题去掉it is 和空格中的词，句子可以还原为完整的句子“at Christmas thousands of young people go skiing in the mountain故选D。
12. D
[解析]
考查强调句。句意：你在一个错误的地方等待。大客车是在旅店接送游客的。使用强调句，结构是： It is/was+强调部分+that+其余部分，如果强调部分是人，也可以用who，这句话强调的是地点状语at the hotel 故选D。
13. D
[解析]
考查强调谓语的用法。句意： ——对不起，我不应该冲你大声喊叫。——你确实发脾气了但是没关系。分析句子可知，此处强调谓语lost， 强调谓语时，可以用do,does,did+动词原形。分析句意可知，此事已经过去了，故应用一般过去时。故应用did lose 结合选项，故选D。
14. B
[解析]
考查强调句。句意：让你快乐或不快乐的，不是你拥有什么或你在做什么，而是你在想什么。分析句子结构可知，去掉It is和空格处what you think about not what you have or what you are doing makes you happy or unhappy是完整的句子，故可知此句为强调句，因为被强调的部分是事情，故空处用that，故选B。
15. B
[解析]
考查强调句式。句意：那晚突发大火是他疏忽的结果。通过分析句子成分可知，It s..that..是强调句式，其中as a result of his carelessness 句中作原因状语，主句是a serious fire broke out during the night 符合强调句结构。故选B项。
16. C
[解析]
考查not until的强调句型。句意：直到整条河里都是因酸雨而死的烂鱼，村民们才意识到污染有多严重。此处为not until的强调句型，其基本结构为： it is+被 强调部分+that+其余部分，不需要用倒装语序，故C项正确。
老师叮咛：李辉老师说，想要提高作文水平，掌握正确的语法十分关键！下面的一个例句都是历年真题中最常出现的、最值得同学们优先理解的虚拟语气考点！经过了全网首席高考英语名师李辉老师团队高度认真的整理校对，无错、可信！可供全国各省高中生打印、背诵！
辉哥说：强烈的欲望和企图心，足以摧毁你面前的一切障碍。有时候不是自己不行，而是自己没有把自己逼到绝路上！
一．强调句的类型
1. 对谓语动词的强调
强调谓语动词时，用“do/does/did＋动词原形”来表示，意为“确实，一定，肯定”。
如：Do be careful when crossing the street.
The train does move.
They did come to see you yesterday，but failed to meet you.
2. It强调句型
1） It强调句型的基本形式
It强调句型最基本的句式结构为：It be＋被强调部分＋that/who＋句子
被强调部分是除谓语之外的其他句子成分，可以是单词、短语，也可以是从句；当强调人时，可以用who 或that；强调其他成分，则只能用that。
如：It is I who/that am right. （强调主语）
2） 对not...until...结构的强调
句型为：It is/ was not until+被强调部分+that+其他部分。
I didn't realize she was a famous film star until/till she took off her dark glasses.
→It was not until she took off her dark glasses that I realized she was a famous film star.
注意：强调句只用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。
3. 强调句的一般疑问句和特殊疑问句
（1） 强调句的一般疑问句的基本句型为：
Be＋it＋被强调部分＋that/who＋句子其他成分
如：Is it Professor Wang who teaches you English?
（2）强调句的特殊疑问句的基本句型为：
特殊疑问词＋be＋it＋that/who/whom＋句子其他成分
如：What is it that you want me to do?
注意：强调句的特殊疑问句用于名词性从句中，要用陈述语序。
I have no idea when it was that I lost my wallet.
4. 含有情态动词的强调句的疑问句结构
（1） 一般疑问句的基本强调句型为：
情态动词或助动词＋it＋be＋被强调部分＋that＋句子其他成分
如：Might it be in the office that she left her keys?
（2）特殊疑问句的基本强调句型为：
特殊疑问词＋情态动词或助动词＋it＋be＋that＋主语＋句子
如：Where might it be that the accident happened?
5. 强调句型应注意的问题
(1) 谓语动词人称和数的一致性。
在强调句中，如果强调的是句子的主语，其后谓语动词应和被强调部分的人称和数保持一致。
如：It is Mary and Tom who often do good deeds.
(2) 强调时间、地点、原因、方式状语时，一律用that，不用when，where，why，how。
如：It was because he was ill that he was absent.
(3) 强调句型的反意疑问句，其问句部分用isn't/wasn't it。
如：It was yesterday that he met Li Ping,wasn't it?
(4) 当原因状语从句由as，since等引导时，强调原因状语应改as，since为because，即只能强调由because引导的原因状语从句。
如：It was because he didn't know much about English that he looked up the word in the dictionary.
二.灵活运用
1. ---Today Mary is in low spirits.
--- Yes, but she won't say bothers her.
A. why is it that B. that is why
C. it is what D. what it is that
2. ---Who are making so much noise in the garden now?
--- the naughty children.
A. It is B. They are
C. That is D. There are
3. It was__ he_ said disappointed me.
A. that;what B. what;that
C. that;which D. which;that
4. It was only after he had read the papers Mr. Gross realized the task was extremely difficult to complete.
A. that B. when
C. which D. what
5.Is it he or you in charge of the job and supposed to complete it punctually?
A. who is B.that is
C. who are D. whom are
6. Was it through Mary was working at a high school you got to know Tom?
A. who; whom B. that; which
C. who; that D. that; who
7. It's not what we do once in a while shapes our lives, but what we do consistently.
A. which B. that
C. how D. when
8. It is in Canada, where Doctor Bethune was born, the story of the book takes place.
A. where B. when
C. that D. which
9. It was in the lab was taken charge of by Professor Smith they did the experiment.
A. which; that B. that; where
C. that; which D. where; that
10. It is only when people live on very limited diet it is necessary to make a special effort to supply the missing vitamins.
A. so B. that
C. since D. until
11. It is at Christmas thousands of young people go skiing in the mountain.
A. how B. which
C. when D. that
12. (2016.天津卷) You are waiting at a wrong place. It is at the hotel the coach picks up tourists.
A. who B. which
C. where D. that
13. --- I'm sorry. I shouldn't have been shouting at you.
--- You your temper but that's all right.
A. have lost B. had lost
C. were losing D. did lose
14. It is what you think about not what you have or what you are doing makes you happy or unhappy.
A. what B. that
C. whether D. when
15. It was as a result of his carelessness a serious fire broke out during the night.
A. when B. that
C. before D. since
16. It was not until the entire river was covered with rotten fish which died from acid rain that
how serious the pollution was.
A. did the villagers realize B. made the villagers realize
C. the villagers realized D. realized the villagers.
Answer
1.D
[解析]
考查宾语从句和强调句型。句意：——今天玛丽情绪低落。——她不会说是的，但不会打扰她。 但她不愿说出困扰她的是什么。此处动词say后面是宾语从句，引导词即起引导作用又做宾语从句的主语，宾语从句应该由what引导;同时此处又是对引导词的强调，it is 强调部分that....故选D
2. A
[解析] .
考查强调句结构。句意：一现在谁在花园里制造这么多噪音？一是淘气的孩子们。答语中只给出了被强调成分，that / who以及其后部分省略了。故选A。
3.B
[解析]
句意：正是他说的话让我很失望。这是一个强调句型，"it is/was that..是 固定搭配，"what he said"是被强调部分，你可以发现去掉"it was that后，句子仍然完整。"what he said做主语，主语从句中"said"缺宾语用what补足，故选B。
4.A
[解析]
考查强调句。句意：直到他看完这些文件，格罗斯先生才意识到完成这项任务极其艰巨。强调句结构为It is/was +被强调部分+that/who +句子其他部分。本题强调状语only after he had read the papers 故选A。
5. C
[解析]
考查强调句和主谓一致。句意：是你还是他负责这个工作都应该准时完成这个工作？这是强调句的一般疑问句，因为是强调的是人，连接词用that 和who都可以，由or连接两个以上主语时，动词和最接近的主语一致，由此可以排除A和B; whom引导定语从句时在从句中作宾语，所以排除D。故C选项正确。
6. C
[解析]
考查定语从句及强调句。句意：你是不是通过正在高中工作的玛丽认识汤姆的？第－ －空引导限制性定语从句，修饰先行词Mary，并在从句中作主语，故用who；第二空用that，与Was it through Mary起构成强调句的一般疑问形式，被强调部分是作方式状语的介词短语：through Mary 故C项正确。
7. B
[解析]
考查强调句。句意：并不是我们偶尔做的事情塑造我们的生活，而是我们坚持做的事情塑造我们的生活。这个句子中含有It's， 首先要考虑它是不是强调句，把It's和空格处去掉，这个句子仍然结构完整，语意清楚，所以这个句子就是强调句，所以填that, 故选B。
8. C
[解析]
考查强调句。句意：在加拿大，白求恩医生出生在那里，书中的故事发生在那里。分析句子结构，可知where Doctor Bethune was born为定语从句修饰Canada。 the story of the book takes place in Canad强调in Canada用It is.. .that...结构。故选C项。
9. A
[解析].
考查限制性定语从句和强调句。句意：就是在由史密斯教授负责的实验室里，他们做的试验。第一个空格处是定语从句，先行词为the lab, 指物，且从句缺主语，故可填which或that。 第二个空格处是强调句，使用的是It was...that句型， 去掉句型句子可还原为they did the experiment in the lab句子成分完整。故第二个空格处填that。故选A。
10. B
[解析]
考查强调句。句意：只有当人们以非常有限的饮食为生时，才有必要做出特别的努力来供应缺少的维生素。分析句子结构可知应为it is 强调时间状语+___ .+ 其他内容，应为强调句结构，因此所填空应为that。故选B项。
11. D
[解析]
考查强调句中的引导词。句意：就是在圣诞节有成千.上万的年轻人去山，上滑雪。强调句型的基本结构是It be+被 强调部分+that （被强调的是人可以用who) +其它，其判断方式是：去掉“it be...that句子完整；本题去掉it is 和空格中的词，句子可以还原为完整的句子“at Christmas thousands of young people go skiing in the mountain故选D。
12. D
[解析]
考查强调句。句意：你在一个错误的地方等待。大客车是在旅店接送游客的。使用强调句，结构是： It is/was+强调部分+that+其余部分，如果强调部分是人，也可以用who，这句话强调的是地点状语at the hotel 故选D。
13. D
[解析]
考查强调谓语的用法。句意： ——对不起，我不应该冲你大声喊叫。——你确实发脾气了但是没关系。分析句子可知，此处强调谓语lost， 强调谓语时，可以用do,does,did+动词原形。分析句意可知，此事已经过去了，故应用一般过去时。故应用did lose 结合选项，故选D。
14. B
[解析]
考查强调句。句意：让你快乐或不快乐的，不是你拥有什么或你在做什么，而是你在想什么。分析句子结构可知，去掉It is和空格处what you think about not what you have or what you are doing makes you happy or unhappy是完整的句子，故可知此句为强调句，因为被强调的部分是事情，故空处用that，故选B。
15. B
[解析]
考查强调句式。句意：那晚突发大火是他疏忽的结果。通过分析句子成分可知，It s..that..是强调句式，其中as a result of his carelessness 句中作原因状语，主句是a serious fire broke out during the night 符合强调句结构。故选B项。
16. C
[解析]
考查not until的强调句型。句意：直到整条河里都是因酸雨而死的烂鱼，村民们才意识到污染有多严重。此处为not until的强调句型，其基本结构为： it is+被 强调部分+that+其余部分，不需要用倒装语序，故C项正确。
