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(共17张PPT)
英语沪教版八年级上册
Unit5
Going on
an exchange
trip
Lesson 3 Grammar
01
在语境中归纳总结现在完成时的含义和句型结构。
02
准确使用含有already、yet、ever、never等副词和since、for等词的现在完成时表达已经发生的事情。
03
通过小组合作与表达，增强跨文化意识与合作精神。
Learning Objectives
通过本课时的学习，学生能够：
重点
重点
Free talk
Have you ever been to another city or country
Yes, I have been to Beijing. /
No, I haven’t. /...
What did you do there
I visited the Great Wall. / I ate delicious food. / ...
Think and predict
What do you think Eric has probably done in Beijing
He has probably visited the Palace Museum.
He has made new friends.
...
Eric has been in Beijing for a week.
Read and underline
Read Eric’s email and underline the sentences with present perfect tense.
Fill and learn
Present perfect tense: to talk about actions we did in the recent past but ______________________ (have a result or an effect/have no result or no effect) in the present.
past
now
I have just learnt how to play Go.
I learnt how to play Go.
I can play Go.
have a result or an effect
Reorder and fill
Reorder sentences with the present perfect tense. Then fill in the blanks.
1. have/ how to play Go/ learnt/ I
_____________________________________.
2. shown/ me/ He/ has/ the medals he won
_____________________________________.
3. Wei/ been to/ the UK/ hasn’t _____________________________________.
I have learnt how to play Go
He has shown me the medals he won
Wei hasn’t been to the UK.
Reorder and fill
Reorder sentences with the present perfect tense. Then fill in the blanks.
I have learnt how to play Go.
He has shown me the medals he won.
Wei hasn’t been to the UK.
How to form statements
Positive I/We/You/They ______ learnt/ shown …
__________ has
Negative _____________ haven’t been …
He/She/It _______
have
He/She/It
I/We/You/They
hasn’t
haven’t = have not
hasn’t = has not
past participle
Reorder and fill
Reorder sentences with the present perfect tense. Then fill in the blanks.
4. learnt/ how to play Go/ Eric/ Has
____________________________
5. he/ has/ Yes,
________________________.
Has Eric learnt how to play Go
Yes, he has
How to form questions
Have ______________ learnt(…)
_____ he/she/it
Short answers
Yes, I/we/you/they have.
he/she/it _____.
No, I/we/you/they ________.
he/she/it hasn’t.
Has
I/we/you/they
has
haven’t
past participle
The past participle of a regular verb is usually the same as its past tense form. You can find the past participles of some irregular verbs on pages 142~143.
Read and circle
Read the passage and circle already/yet/since and for in these sentences. Then fill in the blanks.
Sarah has been in Beijing for a week. She has stayed with her host family since14 October. She has already tried a lot of local food in Beijing, but she hasn’t visited many places of interest. For example, she has not seen the Great Wall yet, and she has not been to the Summer Palace either. She hopes to go there next week.
We use ever/ never/ already______(after, before)have/has and ________ (after, before) the main verb.
We usually use ______ (since, for) with a point in time. We use ______ (since, for)with a period of time.
We often use yet at the end of a question or a _______________ (positive sentence/ negative sentence) .
after
before
negative sentence
since
for
Do a quiz
用括号中所给单词的适当形式填空
1. —I think our teacher, Mr Wang, knows everything.
—I agree. That’s because he _________ (read) over 5,000 books.
2. —______ you ever _________ (visit) the London Zoo, Anne
—No, I haven’t.
3. So far, Zibo’s tourism (旅游业) _______________ (develop) quickly and it’s becoming more and more popular.
4. The children _____________ (not eat) their lunch yet. They are hungry now.
has read
Have visited
has developed
haven’t eaten
Let’s write
1. I/for/in Britain/stay/two months.
2. She /never/worry about /her looks
3. Eric/yet/don’t return
4. ever/you/visit Britain/
5. Jessica /already /change her opinion/on her looks
Jessica has already changed her opinion on her looks.
Write sentences with the present perfect tense.
I have stayed in Britain for two months.
She has never worried about her looks.
Eric hasn’t returned yet.
Have you ever visited Britain
Doris and Chris are good friends. They (1) (know) each other
(2) a long time. They first met each other in the Tennis Club. Doris is now in London on an exchange trip. She (3) (be) away
(4) last Sunday. Chris went on holiday the week before. Therefore, Doris (5) (not see) Chris (6) two weeks.
Read and complete
have known
for
has been
since
has not seen / hasn’t seen
for
Complete the passage with the correct form of the verbs in brackets and since or for.
Ask and Answer
Have you ever been to...
How long have you stayed/ been in ...
Have you ever eaten...
...
Think about your travelling experiences. Ask and answer questions with your classmates.
Summary
The Present Perfect Tense
3
1
To talk about actions we did in the recent past but have a result or an effect in the present.
Basic sentence structure:
sb. has/have done sth.
2
already, yet, never, ever, since, for.
Homework
Recite the irregular verbs on P142-143.
1
Preview Writing.
2
Bye Bye

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