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1、学习目标： 学习用否定前缀un-/ in-和im-构成反义形容词的方法。学习重难点：学习使用含否定前缀un-/ in-和im-形容词表达否定含义。学习过程预习导航We know salad is good for us.You can add anything you like to a salad. Is it healthy to add much sugar? No, it is not healthy. Its unhealthy.向学生讲解否定前缀un-的作用：By adding a group of letters to the front of an adjective, we
2、can change its meaning. One of the most common prefixes for adj.is un-. It means not . We add it to some adj. to give them the opposite meaning. 接着介绍其他否定前缀in- ,im- .预习检测翻译下列单词：不重要的_ 不能的_ 不活跃的_ 没有耐心的_ 不高兴的_ 不必要的_ 不友好的_ 不普通的_ 不礼貌的_当堂反馈 一适当形式填空：1. Its _(polite) not to give the seats to the old on the b
3、us.2. Its _(possible) for such little child to finish so much work in two hours.3. We never believe what he says because he is a _(honest) boy.4. Its _(correct) to say a bad word about anyone.5. There is no need to be _(friendly) to them.6. The small pair of shoes makes me _(comfortable).7. Computer
4、 makes it _(possibly) to work from home.8. I was _(tidy) up my desk when the phone rang.9. Its good for you to work _(proper)10. He answered few questions _(correct), so he got a high grade in the final exam.11. Why is he so _(polite) ? He is _(shout ) at his mother.12. Youd better _(not be) crazy a
5、bout _ (shop).13._(wear) _(comfortable) shoes is bad for your _(foot).14. Are you _(certainly) you didnt leave your key at home?15. You should take an _(actively) part in discussion.2. Homework 二完型填空Nowadays more and more Chinese teenagers find life more difficult without their parents. They dont kn
6、ow how to do _1_. Because their parents do almost everything for them at home. This is a big problem. Joy is 14 years old. One day her parents went away_2_ business, so she had to stay at home alone. At first she thought she would be happy _3_her parents were not in. She could do everything_4_she li
7、ked. But it was six oclock in the afternoon, she felt _5_. “Oh, its time to have supper. Where can I get my food?” she said to herself. Later she found some food in the fridge, but she _6_know how to cook. At that moment, she missed her _7_very much. At last she could only go to the supermarket and
8、_8_ some food to eat.Many of teenagers are_9_as Joy. So I think they should learn some basic life skills, like cooking, tidying up their rooms or dressing themselves_10_. They shouldnt depend too much on their parents.（ ）1. A. their homework B. some shopping C. business D. housework（ ）2. A. in B. at
9、 C. on D. with（ ）3. A. so B. because C. but D. until（ ）4. A. that B. who C. where D. when（ ）5. A. hungry B. full C. excited D. bored（ ）6. A. couldnt B. didnt C. might not D. wouldnt（ ）7. A. cousin B. aunt C. brother D. parents（ ）8. A. made B. bought C. gave D. saw（ ）9. A. the same B. difficult C. different D. warm-hearted（ ）10. A. actually B. carelessly C. properly D. Slowly
