八年级英语上册 unit 4 do it yourself period 5学案(新版)牛津版

《八年级英语上册 unit 4 do it yourself period 5学案(新版)牛津版》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、DoityourselfPeriod5一、【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。二、【学习重难点】1.如何在形容前添加un-、in-和im-构成反义形容词。2.如何使用否定前缀表达否定含义。三、【自主学习】写出下列形容词的反义词certain_____________comfortable_______________important_______________interesting_________________able__________________fair_

2、__________________friendly________________happy________________healthy________________kind________________lucky__________________pleasant________________tidy___________________usual_________________active__________________correct_______________patient__________________possible_______________

3、____complete________________direct___________________polite___________________proper_________________四、【合作探究】Step1呈现1.教师问：——Isithealthytoeatmuchsugar?——No,it’snothealthy./It’sunhealthy.2.向学生解释前缀un-的作用：un-=“not”.接着介绍其他否定前缀in-和im-:例如：inactive;impossible.3.“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

4、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.Step2操练1.学生打开课本，翻到第51页，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。五、【达标巩固】一、添加适当的前缀，写出下列形容词的反义词1.certain_____

5、____________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.Youshouldnotpointatsomeoneelse.Thatis__________(polite).2.Iamsorrytosayyouransweris_____________(correct

6、).3.Itis______________(friendly)toshutthedoorinone’sface.4._________(healthy)fooddoesharmtopeople.5.I’vegotaheadache,soIfeelvery_________(comfortable)now.6.Itis_______(safe)toplaywithfire.7.Iwon’tgotothatmeeting,becauseitis______(important)tome.8.Itis_________(possible)forhimtodosomanythings

7、withinsolittletime.9.Don’tbeso___________(patient).Waitherewithme.10.Thatboyistooyoung,soheis________(able)toknowsomanywords.1.Ifyouwantkeepfit,youshouldeat_______(little)fastfoodthanbefore.2.Theylovereading.Theyare________(read)ofyourmagazine;3.Ki