新外研版九年级英语上M12U1讲述.ppt

Learning Aims 1.熟练掌握下列单词和短语:factory, pollute, recycle, on the environment; worry about; so many (much); it’s no use doing sth 等等 2.理解并能复述本单元的对话 3.熟练记忆并运用本单元的重点句型和知识点 句型：It’s no use talking about things we can’t do等等 6. That means less waste. (1). less 较小的，较少的； 较少数，较小量 1). less 是 little(小；少)的比较级。 He spends less time (in) doing experiments. 他做实验花的时间较少。 2). “less+形容词或副词”构成比较， 译为“较不，更不”。 It is less cold than it was yesterday. 天气不如昨天冷。 7. …, I don’t think it’s hopeless. 这句话的双重否定。这种句子形式上虽为否定，实则表示强烈的肯定语气。 It is impossible not to do the work． 不做这件工作是不可能的。 I dont think that she will fail to come. 我想她应该会来的。 hopeless adj. 无望的；无可救药的 它的反义词hopeful???adj. 有希望的 It is said that their position is?hopeless. ?? 据说, 他们的处境没有希望。 They feel?hopeless?about their future.?? 他们感到前途无望。 She must think him?hopeless.?? 她一定认为他没出息。 -less是最常见的含否定意义的英语后缀之一，它附在名词或动词之后主要构成形容词，有时也构成副词。 homeless 无家可归的 helpless 无助的 useless 没用的 nameless 莫名的 voiceless 无声的 endless 无尽的 colorless 暗淡的 知识链接 The line of cars in the street was endless. It seemed to be _______ to walk across the street. A. hopeful B. hopeless C. helpful D. helpless (2011四川乐山) He failed his job interview again, and he felt really ________ ( with no hope) about the future.? B hopeless 8. It’s no use talking about things we can’t do. It’s no use doing sth.是固定句型，意思是“做某事没用 / 只是白费力气” 。在这个句型中，动词-ing形式是主语，it 是形式主语。 It is no use crying over spilt milk. 覆水难收。（谚语） It is?no?use?talking without?doing. 光说不做是没有用的。 Eugenes?never willing?to?change?any?of?his? opinions.?Its?no?use ______ with?him.?  A.?to?argue? B.?arguing ?C.?argued? D.?having?argued B 这种动词-ing作主语、it 作形式主语的句型还有： It is no good doing sth. 做某事不好 / 没用 / 不行 It’s a waste of time / money doing sth. 做某事是白费时间 / 金钱 It’s fun doing sth. 做某事很有趣 知识链接 It is no good________(talk) to him because he never listens. 跟他讲没用，因为他从来不听。 It’s a waste of time____