Global warming课件5.ppt

混 淆 的 其 它 从 句 ① 强调句型中前后时态应一致;②被强调的部分为主语、宾语和状语,若把it is／was和that／who去掉,剩下的词语能重新组成正确的句子,而且不缺成分,否则就是其它从句。 It was in 1945 that World War II ended. (强调句) It was 1945 when World War II ended.(定语从句) ③ It was a long time since I met you last. (时间状语) It is time that you went to bed. (定语从句) 口诀： 代词 it 本意它, 既可指这又指那; 时间天气均可指, 谈到距离也用它; 假主假宾均可做, 强调句型跟that。 1. It was this village ___ I was bought. A. where B. that C. on which D. which 2. It was in this village ___ I was bought up. A. where B. that C. on which D. which * * 高二选修6 Unit 4 I. 代词 it a. 用作人称代词, 代替前文提到的事物。 My watch is missing. I can’t find (it) anywhere. Her father has gone abroad. Have you heard about (it)? b. 代替指示代词this, that。 What’s this? (It’s) a computer. Whose pen is that? It’s mine. c. 表示时间、天气、距离、季节、明暗等。 It’s time for lunch. It’s getting warmer and warmer． It’s forty years since my hometown was liberated. It’s summer now. How far is it from here to the airport？ It’s about twenty minutes’ walk from here to the bus stop. II. 引导词： a. 作形式主语, 代替由不定式, 动名词或从句表示的真正主语。其基本句型为： It (形式主语) +adj. + to+ v. It (形式主语) +adj. + that (subject (主语)+v. ) It (形式主语)+adj.+ whether (subject +v.) It is ＋adj.＋for／sb. to do sth. (of ) It＋seems (appears)＋that (subject ＋v.) happens ① It is very important to help each other． ② It is no use / useless going there again． ③ It’s not decided yet when they will leave for Shanghai． ④ It seems that he has caught a cold. =He seems to have caught a cold． ⑤ Is ____?possible to master a foreign language in two months? A. now??B. that?? C. it? D. man ⑥ Is ____?necessary to tell his father the truth? A. it? B. that???C. what? D. he b. 作形式宾语, 代替由不定式、动名词或从句表示的真正宾语。其主要基本句型为: 主语＋谓语＋it (形式宾语)＋宾语补足语＋to do sth. (doing sth. 或that从句). ① Marx found it important to study the situation in Russia.