(
课件网) Module 3 Unit 2 We have not found life on any other planets yet. However, we have not found life on any other planets yet. 1 yet 用作副词，意为“还；尚”，常用于否定句或疑问句。 not...yet 意为“还没；尚未”，用于表示某事在某一时间尚未发生，但未来也许会发生。 拓展 not yet 意为“还没有”，可用于对现在完成时态的一般疑问句做否定回答。 — Have you finished your homework — Not yet. Seven other planets also go around the sun. 2 planet 用作名词，意为“行星”。 拓展 除地球之外，围着太阳转的其他七颗行星。 None of them has an environment like that of the earth… 3 none 用作代词，意为“没有一个；没有一人；一点儿也没有”。即可指人也可指物，常用于指三者或三者以上都不，反义词是all。 none of 意为“……中没有一个”。做主语时，后接不可数名词，谓语动词用单数形式；后接可数名词复数形式，谓语动词用单复数均可。 None of the books is/are new. None of the money _____ mine. A. am B. is C. are D. be 选一选 B There are billions of stars in the Galaxy… 4 拓展 数量的表达 1. 具体数目的表达 基数词 + hundred/thousand/million/billion+ 可数名词复数形式 2. 约数的表达 billions of 意为“数以十亿计的；大量的”。 hundreds/thousands/millions/billions + of + 可数名词复数形式 three hundred students thousands of students It is impossible to imagine. 5 impossible 用作形容词，“不可能的；（事情）办不到的”。 im- possible 用作形容词，意为“可能的”，是impossible的反义词。 Nothing is impossible. It’s possible for me to buy a big house. However, no spaceship has travelled far enough to reach other stars in our Galaxy. 6 形容词/副词+ enough+ to do sth. 意为“足够……可以做某事”，其否定形式为“not +形容词/副词+ enough+ to do sth.”意为“不够……，不可以做某事。” 拓展 enough的用法 enough用作形容词，修饰名词时，置于名词前；用作副词，修饰形容词或副词时，置于其后。 Why has no one communicated with us 7 communicate 用作动词，意为“联系；交流”。 名词形式为：communication “联系；交流” communicate with sb. 意为“与某人交流”。 We should communicate with our parents or teachers when we are in trouble. 课堂小结 1. 五个单词：yet, planet, none, impossible, communicate 2. 五个短语： not...yet, none of, billions of, 形容词/副词+ enough+ to do sth., communicate with sb. 3. 围绕太阳转的行星
