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Unit4 Topic2 SectionA 精品学案预习热身。翻译：A:life in space_______________________ travel by spaceship_________________________in order to (do)_______________________B:in the future____________________ on the earth____________________What fun!______________________ will be able to________________C:A wonderful movie will be shown tonight.____________________________________________We will be able to do anything that can be done on the earth._______________________________I don’t think aliens can be found in space._______________________________I won’t believe there are aliens until I see them with my own eyes._____________________________二：重难点释疑。1.We will be able to do anything that can be done on earth. 思考：that can be done on earth是______从句，修饰先行词__________点拨：can be done 能够/可以被做(带有情态动词的被动语态)。练习：.这些树明天必须被栽种。These trees _______ ______ _________ tomorrow.2.They are reading information on the Internet in order to learn about human culture. 他们正在互联网上阅读资料，以便了解人类的文化。点拨：in order to (do) 为了… (后接目的状语)，否定形式 in order not to (do)… 链接：so that 为了… (后接目的状语从句)。练习：1.为了能赶上早班车今天早上他起床很早。He ______ ____ early _____ _______ he _______ _________ the early bus thismorning.2.为了提高口语他去年去了英国。He went to England last year ___ ______ ____ _________her oral English.第 1 页
3.I don’t think aliens can be found in space. 我认为在太空中找不到外星人。点拨: 主语(第一人称)+think/suppose/believe/imagine/expect，后面宾语从句中的否定词not要前移到主句，即______________ 注意：这种含有否定前移复合句的反意疑问句部分要与从句一致. 练习：a .I expect they can make progress in English.(变否定句) _________________________ b.我相信他不会回来. I _______ __________he ________ ________ back.c.我认为明天不会下雨.I ________ ________ it _______ _______ tomorrow,.4.I won’t believe there are aliens until I see them with my own eyes.除非亲眼所见，否则我也不相信有外星人存在。点拨: not…until… 直到…才…(until引导了时间状语从句)，从句中要遵循主将从现的原则 。对比：…until… 和not…until… 分析：a. They kept waiting for her until she came back. b. They didn’t leave until she came back. 总结：until…前面主句的谓语动词是_______________; not…until…前面主句的谓语动词是_______________练习：1.昨天晚上直到完成作业我才睡觉。I _______ go to bed _______ I _________ my homework last night.2.明天我会一直等到你回来。I _______ ________ ________ you ________ you ________ back tomorrow.第 2 页
3.I don’t think aliens can be found in space. 我认为在太空中找不到外星人。点拨: 主语(第一人称)+think/suppose/believe/imagine/expect，后面宾语从句中的否定词not要前移到主句，即______________ 注意：这种含有否定前移复合句的反意疑问句部分要与从句一致. 练习：a .I expect they can make progress in English.(变否定句) _________________________ b.我相信他不会回来. I _______ __________he ________ ________ back.c.我认为明天不会下雨.I ________ ________ it _______ _______ tomorrow,.4.I won’t believe there are aliens until I see them with my own eyes.除非亲眼所见，否则我也不相信有外星人存在。点拨: not…until… 直到…才…(until引导了时间状语从句)，从句中要遵循主将从现的原则 。对比：…until… 和not…until… 分析：a. They kept waiting for her until she came back. b. They didn’t leave until she came back. 总结：until…前面主句的谓语动词是_______________; not…until…前面主句的谓语动词是_______________练习：1.昨天晚上直到完成作业我才睡觉。I _______ go to bed _______ I _________ my homework last night.2.明天我会一直等到你回来。I _______ ________ ________ you ________ you ________ back tomorrow.第 2 页
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