《Past and Present》GrammarPPT

《Past and Present》GrammarPPT

第一部分内容：Learning aims

1. To master the structure and basic usage of present perfect tense(PPT). 

（掌握现在完成时的基本结构、用法。）

2. To learn the rules of forming the past participle of verbs.

（学习动词的过去分词变化规则。）

3. To learn some time expressions usually used in PPT.

（学习常用在现在完成时里的时间表达方式。）

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《Past and Present》PPT，第二部分内容：Lead-in  Ask and answer 

1. How long has Mr. Chen lived in Sunshine Town?

He has lived here since he was born.

2. Can Mr. Chen see his old friends as often as before?

No. Because most of his old friends have moved away.

present perfect tense

have + done(动词过去分词)

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《Past and Present》PPT，第三部分内容：While-task

Task1: Learn by yourselves

When do we use present perfect tense?

We use the present perfect tense to talk about an action that started in the past and continues to the present.表示过去开始，现在还在继续的动作。

We use the present perfect tense to talk about an action that happened in the past  and has a connection with the present.

表示过去发生的或已完成的动作对现在造成的影响或结果。

Task2: Group work

Discuss: What's the basic structure of PPT?

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《Past and Present》PPT，第四部分内容：Adverbs of time

already: 表示已经发生（肯定）

ever: 表示“曾经” （否定句 /疑问句）

for: 表示一段时间 

just: 表示“刚刚” 

never: 表示“从不” （否定句）

recently: 表示“最近”

since: 表示“自---以后”

yet: 表示“已经”或者“还没有”（疑问句/否定句）

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《Past and Present》PPT，第五部分内容：Exercises

1. I ________(have) lunch already.

2. Has the train_______ (arrive), yet?

3.Tome ____ never ______ (be to ) China.

4. The twin ______just _____(see) my father.

5. The twins ____(see) my father just now.

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《Past and Present》PPT，第六部分内容：课堂练习

一、写出下列词的过去分词

1. be_____________2. become___________

3. begin__________ 4. blow_____________ 

5. build___________6. choose___________

7. cost____________8. do_______________

9. drink___________10. eat______________

11. drive__________12. fall______________

13. fly____________14. forget____________

15. know___________

二、根据旬意及中文提示完成单词

1. I have only started to learn French _______（近来）

2. ---Has the train arrived ____________ (还,仍)? 

---Yes, it arrived ten minutes ago.

3. How long has Mr Smith____________ (教)English     so far?

4. There have been great____________ (改变)in America since I left there.

5. No country has made such progress as Chinese in the ____________（过去的）thirty years.

三、用括号中所给动词的适当形式填空

1. He ___________ (wait) for an hour.

2. I _______________ (not finish) the work yet.

3. _____ you _______ (know) him since then?

4. I ____________ (not hear) from my brother for a long time.

5. We ___________ (be) there many times since 3 years ago.

四、单项选择

(    ) 1. I haven’t seen you _____ last Friday

A. for    B. since    C. from    D. on

(    ) 2. Oh, you ____ the computer game for two hours. It’s bad for your eyes. Stop, please!

A. played   B. have played   C. were playing   D. play 

(    ) 3.I won’t go to the show because I ____ my ticket. 

A. lose  B. don’t loseC. have lostD. will lost

(    ) 4. ---______ my dictionary?  ---Yes. I saw it on your desk a moment ago.

A. Have you seen B. Do you see   

C. Had you seen  D. Would you seen

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