Unit 4 Global warming语法讲解 it的用法(2)
unit4globalwarming单词和句型重点总结
Unit 4 Global warming全球变暖一、词汇about发生；造成注意：（1）come about是不及物动词短语，不能用于被动语态，常指情况不受人控制的突然发生。
有时用it作形式主语，that从句作真正主语。
（2）表示“发生”的词或短语有：happen,occur,take place,break① Many a quarrel comes about through a misunderstanding.② The moon came out from behind the clouds.③ I’ll let you know if anything comes up.④ I’ll come over and see how you are coming along.⑤ I came across an old friend yesterday.⑥ When she came to, she couldn’t recognize the surroundings.① I subscribe to your suggestion.② Which magazine do you subscribe to?③ He subscribed his name to the paper（文件）.④ He subscribed a large sum to the poor students.n.量；数量① It’s cheaper to buy goods in quantity / in large quantities.② A large quantity of silk is sold in Japan.③ A large quantity of drugs are found in his home.④ Large quantities of rain are needed in this area.① He tends to get angry when others disagree with her.② His views tend towards the extreme（极端）.③ He was tending (to) his son when I saw him in the hospital.④ Jane is nice but has a tendency to talk too much.=Jane is nice but she tends to talk too much.① The price of the new house in our area has gone up by 1,000 yuan per square meter（平方米）。
人教版高中英语必修六Unit4 Global warming课文全解
人教版高中英语必修六Unit4 Global warming课文全解（常考单词、高频短语和写作句式）Ⅰ. 常考单词必背1．consume vt. 消耗，消费；挥霍vi. 耗尽，毁灭Consumer goods production was to go up by six percent in that city. 在那个城市，消费品生产将增长百分之六。
2．random n. 偶然/随便的行动 adj. 任意的；随便的；任意的 adv.胡乱地[快速闪记]at random 随便地Because these natural disasters occur at random times，it is difficult to warn people in advance. 自然灾害的发生具有随机性，所以很难事先警告人们。
3．subscribe vt.&vi.(常与to连用) ①捐(款)；捐助②订购(报纸等) ③同意；赞同I subscribe to a few favourite charities. 我定期向几个中意的慈善机构捐款。
I've personally never subscribed to the view that either sex is superior to the other. 我个人从来都不同意性别有优劣之分的观点。
4．quantity n. 量；数量The change of quantity causes the change of quality. 量变引起质变。
[快速闪记]a large quantity of/large quantities of 大量in quantity/in large quantities 大量地5．trend n. 趋势；倾向But recently，we have seen a gradual trend towards healthier food. 但是近来，我们注意到人们逐渐倾向于更加健康的食品。
高中英语UNIT4GLOBALWARMINGSECTIONⅢGRAMMARIT的用法(2)课件新人教
2．特殊疑问句：特殊疑问词＋is/was＋it＋that＋其他成分？ Where was it that you met Tom yesterday? 昨天你是在哪儿遇见汤姆的？ Who was it that came up with the bright idea? 究竟是谁提出了这个好主意？ [点津] 强调句型也可用于宾语从句中，但注意语序要用陈述 句语序：动词＋特殊疑问词＋it is/was＋that＋其他。 I wonder why it was that he gave up his well-paid job. 我不知道他为什么放弃他的高薪工作。
[点津](1)强调句可以强调主语、宾语和状语，但不能强调 谓语，强调谓语动词要用“do/does/did＋动词原形”。
Do be careful when you cross the street. 过马路时，务必要小心啊！ (2)当被强调部分是人时，可用 that/who，其他情况都用 that。 (3)强调时间、地点、原因时不能用 when, where, why， 只能用 that。
→ He did finish his homework yesterday.
二、强调句型的疑问形式 1．一般疑问句：Is/Was＋it＋被强调部分＋that/who＋其他成分？
Was it Li Ping that/who he met yesterday? 他昨天遇到的人是李平吗？ Was it last year that you got the degree? 你是在去年获得学位的吗？
即时演练 4 选词填空 (when, before, since, that)
①It was 20 years ago that the two friends met in Vietnam. ②It will be 20 years before they meet in Vietnam. ③It is 20 years since he came to live here. ④It was 20 years that he spent in writing this novel. ⑤It was midnight when he came back home. ⑥It was in 1949 when our country was founded that he left his
Unit 4 Global warming Grammar课件 (人教版选修6)
• 9．用这一强调句型时，要注意以下几点 • (1)不论强调句子的哪一部分，都可用that连 接句子的其余部分。 • (2)被强调部分指人时，可用who取代that。 • (3)如果被强调部分指人，并且作后面句中的 宾语时，也可用whom代替who。 • (4)that，who等常常被省略掉，特别是在口语 中，在强调直接宾语或间接宾语、时间或地 点状语时。
• 3．Only when I reread his poems recently，I began to appreciate their beauty. • 【答案】It was only when I reread his poems recently that I began to appreciate their beauty. • 4．Not who is right but what is right is of importance. • 【答案】It is not who is right but what is right that is of importance.
• Ⅲ.对画线部分进行强调 • 1．Did he work where his father had studied? • 【答案】Was it he who/that worked where his father had studied? • Was it where his father had studied that he worked? • 2．My mother met Tom in the street yesterday. • 【答案】It was in the street that my mother met Tom yesterday.
• 4．What the professor said had a great effect on us. • It was ________ ___ad a great effect on us. • 【答案】what the professor said
选修六 unit 4 Global warming section 4
It is a wonder that he is still alive.(it作形式主语句型)
他仍然活着真是个奇迹。 It is the best book that I have ever read.(it代指书)
这是我看过的最好的书。
人教版英语 · 选修6
同步语法讲座
单元写作平台
温馨提示：①it后面的动词be常用两种形式：is与was。如果
人教版英语 · 选修6
强 调 强调句型以名词性从句 句 的形式出现。 型 强调句型与定语从句相 结合。
同步语法讲座
单元写作平台
it的用法
强 调 句 型
例 句 强调句与定 It was at the railway station that we first met 16 语从句、状 years ago. 语从句等其 (强调句，强调地点状语at the railway station) 他句型的区 我们16年前第一次相逢是在火车站。 别：若原句 It was the railway station where we first met 16 去掉it is/was years ago. 及that仍然通 (定语从句，where是关系副词，在定语从句中 顺、语法成 作地点状语) 立，则是强 这是我们16年前第一次相逢的火车站。 It was clear that he didn’t agree with us. 调句，否则 就是其他从 (主语从句，that引导真正主语，it为形式主语) 句。 很显然，他不同意我们的观点。
人教版高二英语选修六Unit 4 Global warming It用在强调句中
“it”的用法（二）【观察】观察下列几组句子中it的用法，然后加以总结。
1. a. It was for this very reason that Mr. Li came to work late this morning.b. It was a professor from Peking University who / that gave us a speech yesterday.2. a. It must be the naughty boys who are making so much noise.b. It might have been at midnight that the traffic accident took place.3. a. Is it in this factory that your father worked 20 years ago?b. Was it on the bus that you had your cellphone stolen yesterday?4. a. What is it that your boyfriend has bought you as a birthday present?b. When and where was it that you met Jim for the first time?5. a. It is simply because I like it that I do it.b. It is what you do rather than what you say that matters.6. a. I wonder what it is that has caused him to change his mind.b. He asked me why it was that I hadn’t turned up at the party.【总结】通过观察以上例句，可将it的用法归纳如下：★强调句型的基本句式是“It is / was +被强调部分+ that / who +句子的其余部分”，它可以对句中除谓语动词以外的成分加以强调。
unit4globalwarming单词和句型重点总结
Unit 4 Global warming全球变暖一、词汇about发生；造成注意：（1）come about是不及物动词短语，不能用于被动语态，常指情况不受人控制的突然发生。
有时用it作形式主语，that从句作真正主语。
（2）表示“发生”的词或短语有：happen,occur,take place,break① Many a quarrel comes about through a misunderstanding.② The moon came out from behind the clouds.③ I’ll let you know if anything comes up.④ I’ll come over and see how you are coming along.⑤ I came across an old friend yesterday.⑥ When she came to, she couldn’t recognize the surroundings.① I subscribe to your suggestion.② Which magazine do you subscribe to?③ He subscribed his name to the paper（文件）.④ He subscribed a large sum to the poor students.n.量；数量① It’s cheaper to buy goods in quantity / in large quantities.② A large quantity of silk is sold in Japan.③ A large quantity of drugs are found in his home.④ Large quantities of rain are needed in this area.① He tends to get angry when others disagree with her.② His views tend towards the extreme（极端）.③ He was tending (to) his son when I saw him in the hospital.④ Jane is nice but has a tendency to talk too much.=Jane is nice but she tends to talk too much.① The price of the new house in our area has gone up by 1,000 yuan per square meter（平方米）。
高二英语选修6学案：语法解读Unit4 Globalwarming含解析
It is/was not until+被强调部分+tຫໍສະໝຸດ at+sb.do sth.
It was not until the wastewater killed the fish in the river that the boss closed his factory.
记忆要诀
强调结构
强调句一般疑问式
Is/Was + it +被强调部分+that+sb.do sth。？
Is it the little factories that must stop producing the dioxide?
强调句特殊疑问式
What/Where/How/When/Who/Whom is/was+it+被强调部分+ that + sb.do?
What was it that some people in the offices had done that caused the chemistry factory accident?
强调句否定形式
It is/was not+被强调部分+that+sb.do sth。
It was not because the man was infected with the flu that hedied in the hospital.
It强调并不难，that总是在中间。
除了谓语不用管，主宾表状都提前。
否定转移必考题,否定强调难为你。
疑问强调莫忽视，高考场上要牢记。
语法解读
强调句式及其变化
句子结构
句型
例句
高考英语 Unit4《Global warming》知识与要点课件 新人教版选修6
名词复数，又可修饰不可数名词。前者修饰主语时谓语用复
数，后者修饰主语时谓语根据其后所修饰的名词而定。a number of 修饰可数名词复数。
【答案】 D
2．oppose vt.反抗，反对；与(某人)较量 opposed adj.强烈反对的，截然不同的 归纳拓展 (1)oppose sth.反对某事 oppose (sb.) doing sth.反对(某人)做某事 oppose sth. to/against sth.使某一事物与另一事物对照或 反抗 (2)be opposed to (doing) sth.反对(做)某事 as opposed to (表示对比)而，与……相比之下
【答案】 B
5．glance vi.匆匆一看，一瞥，扫视；约略提及，影射； 闪烁，闪耀 n．一瞥，扫视；擦过，掠过；闪烁，闪耀，闪 光
归纳拓展 (1)glance at/down/over/through...瞥一眼，扫视…… glance off 擦过；掠过 (2)at a glance一眼看出；(只)看一眼 at first glance乍一看，乍看之下 take/have/cast/give/a glance at 匆匆看一眼；(朝……)一 瞥 exchange glances 对视，交换眼神 steal a glance 偷偷看一眼
3．state vt.陈述，说明，阐明(往往是详细陈述) n．国家，(美国的)州，政府；状态，状况，情形 statesman n．政治家 statement n．声明，陈述 It is/was stated that...据称…… 同类辨析
state，condition 与 situation (1)state 指人或事物所处的状态或状况，常与 condition 换用，此外，state 还可表示思想、感情、心理等状态。
高中英语 Unit4 Global warming
感顿市安乐阳光实验学校第四学时Grammar it的用法（Ⅱ）[观察领悟]观察领悟下列句子，注意“it”的用法。
1._It_was John who_/_that bought an old bike yesterday in a marketplace.2._It_was an old bike_that John bought yesterday in a marketplace.3. It_was yesterday that John bought an old bike in a marketplace.4. It_was in a marketplace that_John bought an old bike yesterday.5._It_was because the water had risen that they could not cross the river.6._Was_it_during the Second World War_that he died?7. Was_it last year that you got the degree?8. Where was_it that you met Tom yesterday?[自我总结]在英语中，我们常用“It is/was ... who/ that ...”句型来强调句子的某一成分(一般是句子的________、________或________，但不能是句子的谓语)。
在这个句型中，it没有词汇意义，只是引出________的成分。
如果被强调的成分是表示人的词，用________或________来连接都可以。
如果是其他成分，则一律用________来连接。
答案：主语；宾语；状语；被强调；who; that；that一、it用于构成强调句式要强调一个句子中除谓语以外的句子成分(如主语、宾语、状语等)。
可以使用“It is/was＋被强调部分＋that＋其他成分”这一句式。
人教版高中英语选修六 Unit4 Global warming-语法篇(学生版)
人教版高中英语选修六 Unit4 Global warming-语法篇（学生版）Unit4 Global warming-语法篇_____________________________________________ __________________________________________________________________________________ _____________________________________1.掌握it在强调句中的用法；2.能够利用这个语法点进行遣词造句并运用到写作中；it的用法—强调句型一、强调句型的基本用法英语中常用的强调句型是：It is / was + 被强调部分(主语、宾语、状语) + that / who / whom + 其他部分。
一般来说，被强调部分指人时，用who或whom，其他情况用that，但that也可指人。
现在用强调句型强调下面这个句子的主语、宾语和状语。
She met John at Mary’s birthday party last Sunday.→It was she who / that met John at Mary’s birthday party last Sunday. (强调主语)→It was John Whom / that she met at Mary’s birthday party last Sunday. (强调宾语)6. 被强调部分若是句子的主语，that / who之后的谓语动词在人称和数上应与句子的主语保持一致。
eg：It is I that / who am your friend that will come to help you.二、强调句型的几种较为复杂的结构形式1.被强调部分为状语从句。
Eg: It was when Tom was eleven years old thathis talent for writing became obvious.2.被强调部分含有定语从句。
2017-2018高中英语Unit4GlobalwarmingSectionⅢGrammar-it的用法(2)新人教选修6
三、强调句应注意的问题 1．即使被强调成分是句中的时间状语、地点状语、原因状 语等，也不能用when, where, because等而要用that。 It was in front of the bank that the old lady was robbed. 老太太是在银行前面被抢劫的。
2．强调句型中的主谓一致——还原后，由真正的主语来确 定谓语动词的形式。
②It was a scientist called Charles Keeling, who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997.
③They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide.
(2)It was/will be ... before ... “过……就……” It was not/will not be ... before ... “不久……就……”主 句中的 it 指时间，表语多是long, not long, three days, two weeks等表示“一段时间”的词或短语。试比较： It was three days before he went to Beijing. 三天后他就去了北京。 It was three days ago that he went to Beijing. 他是三天前去的北京。 此句是强调句，去掉“It was ... that”后句子仍然完整合理。
Unit4GlobalwarmingIt的用法及强调句型参考课件
15. The Parkers bought a few house but
12. I hate ____ when people talk with their mouths full. A. it B. that C. these D. them
13. It was only when I reread his poems recently ____ I began to appreciate their beauty. A. until B. that C. then D. so
26. Does ___ matter if he can’t finish the job on time? A. this B. that C. he D. it
27. It worried her a bit ___ her hair was turning grey. A. while B. that C. if D. for
been settled.
A. It has
B. There has
C. It is
D. There is
17. Was it in 1969 __ the American
astronaut succeeded ___landing on
the moon.
A. when; on
B. that; on
__ XXX need a lot of work before
they can move in.
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it的用法（2）编稿：牛新阁审稿：王春霞概念引入上个单元中，我们已经学习it作代词和形式主语、形式宾语的用法，现在将继续学习it引出强调句的用法及一些与it有关的重点句型。
先看这些句子：1. There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon.2. It was a scientist called Charles Keeling, who made accurate measurement of the amountof carbon dioxide in the atmosphere from 1956 to 1997.3. They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide.4. It was during the 20th century that the temperature of the earth went up about one degree Fahrenheit.这些句子都是强调句，中的斜体词部分标识出了句中的强调句结构。
用法讲解it引出的强调句1【高清课堂：it的用法----强调句】强调句的结构：It is / was + 被强调部分（主语，宾语，状语）+ that (who / whom) + 其它部分在强调句型中：1. 被强调部分可以是主语、宾语或状语。
2. 引导词一般用that，如果是人的话，强调主语还可以用who，强调宾语用who和whom皆可。
3. 判断一个句子是否是强调句，我们可以把被强调部分放回到句子中，不需要添加任何成分时，句子就是强调句。
需要注意的是，在考试中，有的题会迷惑大家，许多题以It is开头，但是It is开头的句子并不全是强调句。
那么如何判断呢？看下列例句：1. It was in 2003 that I graduated from the university. 是在2003年我们从大学毕业的。
此句中有强调句结构“It was... that”，是不是强调句呢？把in 2003放回到原来句子中，即：I graduated from the university in 2003.此句非常完整，不缺少成分，是强调句。
2. It was not until dark that he realized it was too late to return home.直到天黑他才意识到太晚了，不能回家了。
把强调句结构“it was... that”去掉，句子变成：He realized it was too late to return home not until dark.（非正常句子）这是强调句中一个特殊的用法，它的原句应该是：He didn’t realize it was too late to return home until dark.注意：not... until句型中，如果写成强调句的话，要把not和until...部分一起提前。
3. Was it in the village which we used to live in that the accident happened?是在我们过去住的那个村子发生的事故吗？此句是疑问句，较复杂的句子如果不好分析时，可以把原来的疑问句改成陈述句，变化得出：It was in the village which we used to live in that the accident happened.去掉It was，句子中that前是从句“which we used to live in”修饰village，译成“我们过去住过的村子”，是定语从句，which代替village作live in的宾语。
原句应该是：The accident happened in the village which we used to live in.考试时经常把此条件句中which和that处变成空白处，看看你是否知道填什么词汇。
那么分清何处是定语从句，何处是强调句，就很关键了。
注意：强调句的一般疑问句形式，把it is/was中的is/was提前。
4. Where was it that the road accident happened yesterday? 昨天是在哪儿发生的交通事故？此句也是疑问句，变成陈述句：It was where that the road accident happened yesterday. （非正常句子）这个强调句的被强调部分，是疑问词，原句是：Where did the road accident happen yesterday?注意：强调句中如果提问被强调部分，要把疑问词放在句首，后面接一般疑问句语序。
5. It is how you behave in difficulties that shows what you are really like.是你在困境中的行为表现出你到底是什么人的。
去掉“It is... that”，句子变成：How you behave in difficulties shows what you are really like.是强调句，因为句子很完整，强调的是主语从句。
■it引出的强调句2强调句型的几点注意：1. 句首词用“It”，不能用“This”，“That”等。
2. be动词总用单数形式，即is或was。
可以用might be/ must have been/ can’t be等形式。
It might be tomorrow evening that the news will be broadcast.这则消息或许是明天晚上播出。
3. 被强调的部分如果是表示“人”的代词，强调主语用主格，强调宾语用宾格。
It is him that (who/ whom) I met in the street yesterday. 我昨天在街上遇到的是他。
It is I that/ who didn’t realize all my mistakes until you told me yesterday.是我直到昨天你告诉我才意识到我的错误。
4. 连接词一般用that，当强调部分是人时，强调主语也可用who，强调宾语也可用whom或who。
当强调部分是时间状语或地点状语时，不能用when或where。
It was about 30 years ago that we graduated from university and became teachers.我们是30年前从大学毕业成为老师的。
It was on Oct. 1st, 1949 that People’s Republic of China was founded.中华人民共和国是1949年10月1日成立的。
It is in the university where he taught that the research is carrying on.这项研究是在他教过书的大学里进行的。
5. 强调句中的主谓一致问题若强调部分是句子的主语，则that或who引导的句子中的谓语动词应和强调部分保持人称和数的一致，即：若被强调部分是单数，谓语动词用单数形式；若被强调部分是复数，则谓语动词用复数形式。
如：It is Mary who often helps me with my English. 是玛丽帮我学英语的。
It is the boy students of Class Two who are playing football on the playground.是二班的学生正在操场上踢足球。
易与强调句混淆的几个句型：1. It is/has been +时间+since ... 从......以来有......since引导的从句通常是一般过去时，如果It is改成It was，since从句常用过去完成时。
It is years since I enjoyed such a good dinner. 我多年没有享受过这么好的一顿晚饭了。
It was five years since his father had died. 当时他父亲去世五年了。
2. It is +时间+ when ... 当……的时候，时间是……when 引导的是时间状语从句，主句中的it 指时间，表语由具体的时间充当。
It was 10 o’clock when we got home last night. 我们昨晚到家时十点了。
对比：It was at ten o’clock that we got home last night．我们昨晚是在十点到家的。
此句是强调句，去掉“it was...that”后句子仍然完整合理，注意that不能改成when。
而上句不是强调句。
3. It was/ will be ... before ... 过.......就......It was not/ will not be... before... 不久......就......主句中的it 指时间，表语多是long, not long , three days , two weeks 等表示“一段时间”的词或短语。
It was three days before he went to Beijing. 三天后他就去了北京。
It will not be long before he finishes his job. 不久他就完成了工作。
对比：It was three days ago that he went to Beijing. 他是三天前去的北京。
此句是强调句，去掉“it was...that”后句子仍然完整合理。
it的常用句型小结11. It is clear (obvious/ true/ possible/ certain…) that …某事是清楚（明显/真的/可能/肯定……）的It was clear that they had no desire for peace. 很清楚他们没有和平的愿望。