教学目标：
Teach the students some words: “early” “late” “begin” and “after”。 They can say sentences with them.
教学重点：
介绍一组反义词early和late, 让学生融入到李明的party中，通过情境让学生了解surprise这个词。
教学难点：
介绍一组反义词early和late, 让学生融入到李明的party中，通过情境让学生了解surprise这个词。
教具应用：
磁带、录音机、词汇卡片
教学过程：
一、 Review
Play “Before” and “After” to review “before” and “after”。
二、 Key Concepts
early, late, begin
party, surprise
1、 Demonstrate “early”， “late” and “begin” together. Draw a big clock on the blackboard that shows the time. Facing the clock, write “before” on the left and “after” on the right. Draw a clock under “before” that shows a few minutes before class time and a clock under “after” that shows a few minutes after.
2、 T: We are learning English now. This is English class. When does English class begin?
S: At _______.
T: Right！ Look！ Here’s ________.
3、 Demonstrate “party” with the large vocabulary card.
4、 Role-play to demonstrate “surprise”。 Ask a volunteer to leave the classroom. Hide a surprise in the volunteer’s desk. Then ask the volunteer to return to the room.
T: I put something in your desk. Dose ____ know what’s in his/her desk, class?
S: No.
T: _____ doesn’t know what I put in her desk. It’s a surprise！
S: Surprise.
T: Yes！ There’s a surprise in your desk. Can you find it?
S: Yes！
T: What is it?
S: A flag.
三、 Practise
Divide the class into small groups. Ask each group to make up a dialogue about organizing a surprise party for a friend.
布置作业
Activity book
板书设计：
Lesson21 A party of Li Ming
before-------- after
early-------late
begin