现在完成时（1）教学

现在完成时态这一语法，是八年级下的重点，也是一难点。学生们弄不清楚。一是时态的结构have(has) +动词的过去分词，不是掉了助动词have(has) , 就是搞错过去分词的变化。二是终止性动词和延续性动词。看到学生学习这个知识点的时候的困难，我教这两个用法时，首先要求学生从文字上认识它，熟记结构，然后记它的第一种用法：过去的动作对现在造成的结果或影响以及与它连用的时间状语already 、yet 、just等。通过举例和练习来完成第一种教学的内容，效果还比较好，每个学生能独立地完成练习。

Step 1  lead-in

I have a ball = I have got a ball

Who’s got talent ? = Who has got talent ?

利用上面的句子，引入现在完成时

T : Are you hungry now?

S : No, I’m not .

T : Why ?

S : Because I have (always ) had breakfast.

给学生时间，进行操练句型

T : Have you had breakfast ( yet) ?

S : Yes ,I have . No , I haven’t .

学生操练句型

Step 2 presentation

1. 现在完成时动词构成

have /has + v 过去分词

助动词 ：否定句：haven’t  、hasn’t

疑问句：Have you…?  Has he…?

2. 常与下列时间状语连用：just , already, yet,

 ever, never, before, several times

过去发生的动作对现在造成的影响或结果。和already，never, ever, just, before, yet等状语连用。

I  have just  had my breakfast. (现在我不饿)

Step 3  practice

Use the words in brackets to complete the conversations.

1.     A: Would you like something to drink?

B:  No, thanks. _______________________  

(just/drink some tea)

2.     A: I heard you lost your key. __________________? (find)

 B: No, not yet.

3.     A: Do you know when Tom is leaving?

B:___________________ . (already/leave)

A: When _________________ ? (leave)

B: This morning.

4. A: Is your sister going to the movies with us tonight?

B: No. _________________________ .(already/see the film)

5. A: What do your parents think about our plan?

B: I   ____________________. (not/tell them/yet)

Step 4 homework

Present  perfect