Section II _ Grammar一 it的用法(2)国 上下天 KEQIANZZHUUNGWU语法图解 1陈述名2. 一般疑问名3.特殊疑问向于识别方法1与名词性从名结合2.与定语从句结合3.与not until 结合1.强调成分2.主谓一致3.反意疑问句4省略形式5.易混句型立酒式肝dfN村意册如次否冲种 个丁豆| 探究发现CDThere is no doubt that the earth is becoming warmer andthat it is human activity that has caused this global warmingrather than a random but natural phenomenon.G)It was a scientist called Charles Keeling, who made aceuratemeasurements of_the amount of carbon dioxide in theatmosphere from 195S7 to 1997.They also agree that it is the burning of more and more fossilfuels that has resulted in this increase in carbon dioxide.It was during the 20th century that the temperature of去earth went up about one degree Fahrenheit. 2LN 乓 S我的发现这些句子都是 强调多 ，句中的黑体词部分标出了句中的强调名结构，即: iis/was十被强调部分十that/who .句首词用“让?;be动词总是用单数形式，即站或was。 连接词一般用that，当强调部分是人时，强调连接词也可用who 。SSSN 二 一 NE一、强调句的基本用法强调句就是把句中要强调的部分(通常是主语、宾语、状语或状语从名)放在It is/was和that/who之间，原句中剩余部分放在that/who之后。1. 强调句的陈述名式“Itis/was十被强调部分十that/who十其他剩余部分，?”The 2022 Winter Olympic Games will take place in Beijingand Zhangjiakou. 一lt is in Beijing and Zhangjiakou that the 2022 加 史Olympic Games will take place.在北京和张家口将要举行2022年冬季奥运会。SS名师点津 (1强调名中的连接词只用that(指人或物)或who(只指人)，且都不可省略。(2)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十动词原形。He did write to you last week.SN上周他确实给你写了信。 全兴，让2. 强调句的一般疑问句式“Is/wWas it十被强调部分十that/who十其他剩余部分? ”Is it in Beijing amd Zhanmgjiakom thafithe 2022 WinterOlympic Games will take place?是在北京和张家口将要举行2022年冬季奥运会吗?3， 强调句的特殊疑问句式“被强调的疑问词十is/was it十that十其他剩余部分?What s it that Professor Liu teaches us this year?刘教授今年到底教我们什么?How is it that she turned down our help2什么原因使得她拒绝我们的帮助的?When and where was it that you got to know Mary?究竟在何时何地你认识的玛丽?Who wasitthat came up with the bright idea?究竟是谁所出了好的主意?罗4. 强调句的识别方法如果把强调结构去掉，句子的意思是完整、清楚的，句子结构也是完整的，这个句子就是强调句。如果把强调结构去掉后，意思不通顺六结构也不完整; 则向入不构成强调句式。Tt was because he refused to obey the policeman that he wassent to the police station.他是因为拒绝服从警察而被送到警察局的。挟仿的SA把强调结构去掉，则变为:He was sent to the police station because he refused to obeythe policeman.因为他拒绝服从警察，所以被送到了警察局。去掉强调部分后，句子结构和意义仍然完整，说明这是个强调句 条即时演练们(D句型转换They met each other in that supermarket.GD Itwasin thatsupermarketthat they met each other (强调原句中的地点状语)加 Was it in that supermarket that they met each other? (把变为一般疑问句)Where was itthat they met each other? (提问句中 只状语) SA 5 ss