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课件网) Exploring the Topic Grammar in Use UNIT 3 Sound Body，Sound Mind 通过本节课的学习, 同学们将能： 1.理解构词法中否定前缀的构词原则。 2.准确理解并掌握“need to do” “don‘t need to do” “needn’t do”的用法区别。 3.熟练运用“need”进行症状描述、建议提出、疑问解答等。 学习目标 1. seem v.好像，似乎 2.unhealthy adj. 不健康的 3. empty adj.空的；无意义的 4.stomach n.胃 5.living n. 生活方式 adj. 活着的；生活的 6.clearly adv. 明显地；清楚地；清晰地 7.rid v.摆脱 8.sleepy adj. 困倦的，瞌睡的 9.worse adj. 更差的，更糟的；更坏的 10.fridge n.冰箱 11.weight n.重量 空的；无意义的_____ 胃_____ 好像，似乎_____ 更差的，更糟的；更坏的_____ 摆脱_____ 困倦的，瞌睡的_____ 不健康的_____ 明显地；清楚地；清晰地_____ 生活方式；活着的；生活的_____ 冰箱_____ 重量_____ Exercise: unhealthy adj. stomach n. seem n. worse adj. rid v. sleepy adj. empty adj. clearly adv. living adj. fridge n. weight n. （1）He became a non-smoker in order to keep healthy. （2）Sea food may seem to disagree with some people. （3）Hamburgers may taste delicious, but it is unhealthy to eat too many of them. （4）It is incorrect to do sports with an empty stomach. Grammar in Use Activity 1 Look at the pictures and read the sentences. Pay attention to the words in bold. Prefixes non-,did-, un-, mis-, in-, and im- (1)The restaurant has a special area for smokers. (2)My parents agree that getting enough sleep is important for our health. (3)Eating fresh vegetables every day is important for our healthy. (4)It is correct to wear a helmet when riding a bicycle. Read the following sentences and finish the chart. Affirmative form (肯定形式) smoker Negative form (否定形式) Non-smoker agree disagree healthy unhealthy correct incorrect 常见的否定前缀有哪些： -un-：unhappy（不开心的）、unfair（不公平的）、unable（不能的）、untrue（不真实的） -in-：incorrect（不正确的）、inactive（不活跃的）、invisible（看不见的）、incomplete（不完整的） -im-（常用于以m/p开头的词前）：impossible（不可能的）、impolite（不礼貌的）、immoral（不道德的） -il-（常用于以l开头的词前）：illegal（非法的）、illogical（不合逻辑的） -ir-（常用于以r开头的词前）：irregular（不规则的）、irresponsible（不负责任的） -dis-：dislike（不喜欢）、disagree（不同意）、dishonest（不诚实的）、disappear（消失，即“不再出现”） -non-：nonstop（不停的）、nonfiction（非虚构的）、nonverbal（非语言的） 词汇加上否定前缀，只改变词意，不改变词性。 Fill in the blanks with the correct form of the given words. Activity 2 impossible uncomfortable dislikes misplaces nonstop Activity 3 Read the text and fill in the blanks with the words in the box. improper uncomfortable impatient nonsense 【即时练】 (1) She became _____ (happy) when she heard the bad news. (2) It’s _____ (polite) to shout at your parents. (3) Some people _____ (agree) with the plan, because it is not useful. (4) That’s _____ (sense)! No one can fly without wings. unhappy impolite disagree nonsense Grammar in Use need to do/don’t need to ... ...
