八年级英语下册 Unit 1 Past and Present Grammar 2教案 （新版）牛津版-（新版）牛津版初中八年级下册英语教案.doc

Past and present
教学目标
1.学习现在完成时的时间副词和时间短语。
2.能在语境中运用现在完成时。
重点
现在完成时与一般过去时在时间副词用法区别。
难点
现在完成时与一般过去时在时间副词用法区别。
教法及教具

教

学

过

程

教 学 内 容
个案调整
教师主导活动
学生主体活动

Step1 Lead-in
The teacher can have a free talk with the students.
e.g. You have known something about Mr. Chen.
Could you tell me anything about Mr. Chen?
Step2 Pre-task
Recently we have already known a little about Sunshine Town. I have never been there before. Have you ever been there?
S1: No, I haven’t been there yet.
T: Mr. Chen was born there. He has known it since he was very young. He has known it for a long time.
Step3 While-task
Task 1
1) Tell the students that we can use adverbs of time with the present perfect tense, such as already, ever, for, just, never, since and yet.
2) Some more examples:
I have just seen Millie on the playground.
Has Millie called yet? No, she hasn’t.
I have not heard from Millie yet.
I have done my homework already.
I have never read the novel. …
Step4 Exercises
A.选择填空 (See PPT)
Have you done your homework ______? (for, just, yet)
I have _______ __been to Chengdu. (ever, never, yet)
He has _______ washed the dishes. (already, ever, for)
He has worked there _______ he left school. (already, just, since)
Have you cleaned your room _______? (for, just, yet)
She has known Sam _____ nine years. (for, never, since)
Have you ______ ridden a horse? (ever, for, yet)
They have ______ arrived. (ever, just, yet)
We have not completed the project _______. (already, for, yet)
B. for or since
1. We have lived here ____ 1990.
2. How long have you studied here? ___ 5 years.
3. The boy has had a bad cold _____ last night.
4. Mr. Huang has kept the books ______ a week ago.
5. I have taught in the school _____ I came here.
6. We have been friends ____ a long time.
总结: for +段时间
since +点时间 (过去时间)
since +句子(一般过去时态的句子)
C.句型转换
1. The boy has already gone home. (一般疑问句)
2. The girl has already given it to me. （否定句）
3.They have ever visited the Hainan Island before .（否定句）
1.现在完成时）肯定句变为否定句的基本方法：
2.（现在完成时）肯定句变为一般疑问句的基本方法：
３.注意点：just、already、yet之间的关系及各自适应的句型

Read ,write and remember.

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