1、 教学目标1. 知识目标：Know how to use prefixes “un” “in” “im”2. 能力目标：Learn how to use prefixes to form adjectives with opposite meaning ;3. 情感目标：Learn how to use the right adjective words with prefixes to talk about the opposite meaning . 教学重点 The prefixes “un” “in” “im”教学难点 To train the Ss ability of how to
2、 use the right adjective words with prefixes to talk about the opposite meaning .教学方法 Reading, PracticingStep1 Lead in 1. Show some words on the blackboard:old-young easy-hard tall-short rude/impolite-polite happy-unhappy kind-unkindNow，we know they are prefixes.Step2 PresentationSay: With some adje
3、ctives, we can change the meaning by adding a prefix. Adding the prefixes “im” “in” or “un” to an adjective will express the opposite meaning of the word. These prefixes mean “not” or “the opposite of”e.g. (1)Trainers are comfortable to wear.But small ones are uncomfortable. (2)If someone shows good
4、 manners to others, he is a polite person. (3)If someone does not show good manners to others, he is 批注/记录impolite. Step3 Practice 1.Tell the students that “un-”is not the only prefix. There are more prefixes like this. Invite the students to open their book and ask them to match the words on the le
5、ft with their opposites on the right. eg: certainuncertain important unimportant 2.Show some sentences and fill in the blanks with prefixes.(1)Zhalong is a protected area. It isnt allowed to hunt or fish there. It is incorrect to kill wild animals. (correct)(2)These trainers are comfortable to wear.
6、 But those are uncomfortable. (not comfortable).(3)If someone shows good manners to others, he is a polite person. If someone doesnt show good manners to others, he is impolite. (not polite )Step4 Study groupsMake the following sentences using the prefixes .( 1)Water is very important to us.(2 )This chair is too small.（3）I have never seen such heavy snow here.（4）The restaurant is quite near here.（5）I dont like him because he is rude.Step5 HomeworkTry to finish the exercises and check the answers.课后反思_
