人教版九年级英语下册精品课件：Unit 13 Section B （2a-Self Check）.ppt

1. Rethink, Reuse, Recycle! re-是最常用的前缀之一。它可以加在名词或动词前面，构成新的名词或动词。re-表示以下三方面的意义： 1)表示“回”或“向后”的意思。例如：return（回来）recall（回忆，召回）retract（缩回，取回） 2)表示“再”、“重新”、“重复”的意思。 例如：rethink（再思考），reuse（再 运用），restart（重新开始），recycle （再利用） 3)表示“相反”、“反对”的意思。 例如：rebel（反叛，谋反），reverse （反转，颠倒），resist（反抗，抵抗） 2. She is a most unusual woman. un-前缀，常加在形容词、副词、分词、动词和名词之前；第一，表示否定意义。第二，表示“反动作”。即“相反的动作”。 例如： uneconomic不经济的 ，uncomfortable不舒服的， unending无尽的， unfortunate不幸的 ，unusual不平常的， unkind不仁慈的， unbind解开，释放 ，uncover揭开……的盖子， unearth由地下掘出 ，unbutton 解开钮扣 3. Nothing is a waste if you have a creative mind. -ive是形容词后缀 一般表示有......的 create ﹢ -ive creative 4. Amy recently won a prize from the Help Save Our Planet Society. recent ﹢-ly recently形容词加 ly变副词 5. Amy is an inspiration (n.灵感) to us all. 后缀-tion附在动词后面构成名词 1)当单词最后是t, d, te, de时，变名词加 tion或者ation, ition； 2)当单词最后是元音字母时，变名词加 sion等。 6. She especially likes to use old jeans to make handbags. special 和especial 是同义词， especially 是especial 的副词。 7. The theme park to show people the importance of environmental protection. importance是important的名词。 environmental 是environment 的形容词形式。 protect ﹢-ion protection 2e Make a list of things that need to be done to save the environment. Which things can be done by common people every day? take your own bags when you go shopping spend less time in the shower turn off the lights when you leave a room take public transport rather than drive avoid using air conditioners 九年级（下） 学练优九年级英语下（RJ） 教学课件 Section B (2a-Self Check) Unit 13 Were trying to save the earth! 学习目标 Key words phrases: gate, bottle, president, work, metal, direct, creativity, throw away, put sth. to good use, pull ... down, upside down, bring back Key sentence: The windows and doors come from old buildings around her town that were pulled down. Presentation Look at the title and the pictures in 2b. Can you guess what the pa