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[高考复习指南] 湖南高考英语复习课件牛津译林版模块选修7《Unit 2 Fit for life》健康生活

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  Howeverit was not until World War II that two other scientistsHoward Florey and Ernst Chainmanaged to use new chemical techniques to purify it.然而,直到二战期间,另外两个科学家Howard FloreyErnst Chain 才用新的化学技术设法把它纯净。 含有not...until...的强调句型: 其强调句型结构为:It is/was not until+被强调部分+that+其他句子成分。 I didnt 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. 直到她摘下墨镜,我才意识到她是位著名的影星。

  27.(2008年重庆卷)It was not until midnight________they reached the camp site. Athat

  Bwhen Cwhile

  Das 【解析】 句意为:直到午夜他们才到达营地。it was not until...that...强调句结构。 【答案】 A 28.(2004年湖北卷)It was________back home after the experiment. Anot until midnight did he go Buntil midnight that he didnt go Cnot until midnight that he went Duntil midnight when didnt go 【解析】 句意为:直到午夜他才做完实验回家。it was not until...that...强调句结构。 【答案】 C

  It was over a decade before someone else turned penicillin into the great drug of the 20th century.十年之后其他科学家才把盘尼西林变成了20世纪伟大的药品。 It is/was/will some time before...表“多久之后才……”。 该句型主句中be动词的时态常是一般将来时或过去时两种时态,主句中的表语多是longnot longdaysweeks 等表示时间段的词或短语。 It will be not long before we meet again. 不久我们就会再见面的。 It will be some time before we know the full results. 再过些时候我们才能知道全部结果。

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