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重點句型考點九 can/could have done [基礎過關(guān)] can/could have done 表示對過去發(fā)生的行為進行推測.常譯為“可能 .“會 .一般用于否定句和疑問句 He can’t/couldn’t have done it because he was an honest man. 他不可能做這件事.因為他是個誠實的人 Can/Could the work have been finished on time? 這項工作能按時完成嗎? [點撥]could have done還可用來表示責備或批評.常譯作“本來可以 .“本來能等.You could have been more considerate.你本來可以更慎重些. [拓展延伸] must have done 常用于肯定句.意為“一定 .“肯定是 . may/might have done 意思是“可能 .“也許常用于否定句和肯定句中. should have done 本該------- needn’t have done 本來不需要--- would have done 本來會------ It must have been very late when he left the office. 他離開辦公室時.一定很晚了. He may/might have heard it from Mary.他可能從瑪麗那里聽說了此事. [典型例題] -----Did you visit the Big Ben in London? -----No, we it, but we spent too much time shopping. A. could visit B. could have visited C. must have visited D. can have visited [答案]B 考查情態(tài)動詞表猜測. [點撥]could have done表示“原本能夠完成但事實并非如此考點十 ----- when heated 狀語從句的省略 [基礎過關(guān)]----when heated=when it is heated屬于狀語從句的省略形式 [點撥]1)在世界.地點.條件.方式或讓步狀語從句中.當狀語從句的主語與主句的主語一致或從句中有it is時.狀語從句常采用省略形式 2)此結(jié)構(gòu)中常見的連接詞有when,while,until,if,once,unless,even if,as, as if,though,although等,連詞后的部分常見形式為:現(xiàn)在分詞.過去分詞.形容詞.介詞短語等. He will not come unless invited. 除非接到邀請.否則他不會來的. If possible, I will call on my teacher next month. 如果可能的話.下個月我將去拜訪我的老師 [典型例題] A harmonious society is like a symphony or orchestra----each person contributes a small sound, but when with other sounds, it becomes beautiful music. A combining B. being combined C. combined D. to be combined [答案]C 考查狀語從句的省略現(xiàn)象 [點撥]當狀語從句的主語與主句的主語一致或從句中有謂語動詞be時.則可以省略從句中的主語和be.而combine與邏輯主語之間為被動關(guān)系.因此用過去分詞 [實戰(zhàn)演練] 【查看更多】

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漢英翻澤

十分之九　　

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漢英翻澤

十分之九　　

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請用本單元所學短語的適當形式填空。

He seems a little nervous when facing so many people．(句型轉(zhuǎn)換)

＝________　________　________ he is a bit nervous when facing so many people．

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句型結(jié)構(gòu)