译林版英语八年级上册Unit 4 Do it yourself_学案6

这是一份译林版英语八年级上册Unit 4 Do it yourself_学案6，共3页。
Unit 4 Do it yourselfLesson 6【学习目标】1．学会用否定前缀un-，in-和im-构成反义形容词的方法。2．学会使用含否定前缀un-，in-和im-的形容词表达否定含义。【学习重点】如何在形容前添加un-，in-和im-构成反义形容词。【学习难点】如何使用否定前缀表达否定含义。【学习过程】自主先学一、默写下列单词1．确定的________________________________2．积极的________________________________3．可能的________________________________4．收拾__________________________________5．收拾妥当______________________________6．例子__________________________________7．例如__________________________________8．使处于某种状态________________________9．正确的________________________________10．完成__________________________________二、写出下列形容词的反义词 Certain comfortableImportant Interesting friendly welcomemanned activecorrect patient possible perfect polite personallike agree honest appearorder believe ability 总结归纳变化规则____________________________________________ 三、收集以in-, un-和im-结尾的形容词，结合课本内容，总结归纳其含义。小组讨论1．Is it healthy to eat much sugar?No, it’s not healthy. /It’s unhealthy.2．向学生解释前缀 un- 的作用：un- 等于“not”。接着介绍其他否定前缀in- 和im- 例如：inactive, impossible3．“头脑风暴法”巩固单词：把学生分成两人一组，其中一人读出课本上任意形容词，另一人快速说出其反义词并拼写。例如：一个学生说correct，另一个学生快速说出incorrect。4．教师引导学生归纳：（1）在本课学习的否定前缀中，in- 从来都不会用在以字母l、r开头的单词之前；（2）im- 一般用在以字母b、m或p开头的单词前。如：imperfect, impossible, impatient, improper探究展示1．学生先读短对话，然后完成相关练习。2．分别让四组学生朗读改正后的短对话，其他学生核对答案。核对完毕后让学生集体朗读所有对话。【达标检测】一、添加适当的前缀，写出下列形容词的反义词。1．certain_________________2．usual __________________3．active __________________4．patient _________________5．possible ________________6．fair ____________________7．polite __________________ 8．happy __________________二、用所给单词的适当形式填空。1．You should not point at someone else. That is __________ (polite).2．I am sorry to say your answer is _____________ (correct).3．It is ______________ (friendly) to shut the door in one’s face.4．_________ (healthy) food does harm to people.5．I’ve got a headache, so I feel very _______________ (comfortable) now.6．It is _______ (safe) to play with fire.7．I won’t go to that meeting, because it is _________ (important) to me.8．It is _________ (possible) for him to do so many things within so little time.9．Don’t be so ___________ (patient). Wait here with me.10．That boy is too young, so he is ________(able) to know so many words