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(共15张PPT)
The present perfect and the simple past
Present–observe–analyse–summarize
The present perfect and the simple past
The present perfect and the simple past
现在完成时强调过去发生的动作对现在造成的影响或结果，着眼点在现在，而一般过去时单纯地描述过去某个时间发生的动作或存在的状态，与现在没有直接的关联。如：
She has just had her lunch. 她刚吃过午饭。（表示她现在不饿。）
She had her lunch two hours ago. 她两小时前吃了午饭。（仅说明事实，不知道她现在饿不饿。）
现在完成时通常不与表示过去时间的词语连用，如yesterday, last week, then, three days ago, in 2000等。如：
（×）I have visited the Bund yesterday/last week/three years ago/in 2000.
（√）I visited the Bund yesterday/last week/three years ago/in 2000.
The present perfect and the simple past
如果与表示“到现在为止的某个/任意时间”的词语连用，如ever, before, never, yet, recently, already, lately等，通常用现在完成时。如：
I have never seen that film.
I have read the book recently.
The present perfect and the simple past
现在完成时也可以表示过去开始的动作一直持续到现在，并且可能还会继续下去。此时，它常与连词 for或since连用，也与延续性动词搭配，用于表明动作或状态持续的时间。而一般过去时通常表示过去某个时间点或时间段内完成的动作，动作在过去就已经结束，一般不强调持续性。如:
You have helped me a lot. 你已经帮了我很多忙了。（到目前为止）
My grandmother took good care of me. 我外婆曾悉心照顾我。（在她活着的时候）
has lasted → lasted
have been → were
have had → had
has started → started
learnt → has learnt
opened
went
bought
have
never been
visited
have seen
bought
have read
3 The two pictures show a room before and after the captain asked his soldiers to clean it. Work in groups. Follow the example and create a conversation using the present perfect tense.
S1: Have you made the bed
S2: Yes, we have.
S1: Have you swept the floor
S2: ...
1. Maria __________________ never __________________ (be) to Paris.
2. His grandfather __________________ (die) ten years ago.
3. I’m not hungry. I just __________________ (have) dinner.
4. I __________________ (know) her since I was little.
5. Li Hui __________________ (study) English since he was (be) seven.
6. She __________________ (live) in Guangzhou since 1996.
7. —__________________ you ever __________________ (be) to London
—Yes, I __________________ (go) there last year.
8. Shenzhen __________________ (change) a lot in recent years.
9. Time flies—we __________________ (live) in the same house for 20 years now!
10. Someone __________________ (steal) my neighbour’s bike yesterday.
More practice
用所给词的适当形式填空。
has
died
had
have known
has studied
has lived
been
went
has changed
have lived
been
Have
stole
More practice
阅读短文，用括号内所给单词的正确形式填空，使短文通顺、连贯。
A few years ago, my family __________________ (move) to a new city. I didn’t know anyone there, and I __________________ (feel) very lonely the first year.
My parents were a bit worried. They thought I should take part in some after-school activities, but I never __________________ (find) anything that interested me. One day, however, a classmate mentioned a local dance group and asked if I wanted __________________ (go) there with her. We went for a trial session together, and afterwards, my classmate and I both __________________ (decide) to join.
I __________________ (be) part of this dance group for three years now, and I really enjoy it. There are 20 students in the group. We learn ballet, street dance and even folk dance. I practise dancing every day, and I __________________ (get) quite good at it.
I sometimes __________________ (take) part in events such as local and even national dance competitions, and my parents always come to watch me. They are proud of my achievements.
moved
felt
found
to go
decided
have been
have got
take
Self-assessment
评价内容 评分（1–5）
1. 我能理解现在完成时与一般过去时在含义和用法上的差异。 1 2 3 4 5
2. 我能掌握现在完成时与一般过去时的相关语法知识。 1 2 3 4 5
3. 我能正确运用现在完成时与一般过去时描述生活中发生的事情。 1 2 3 4 5
Homework
基础作业
1.熟练朗读课本第89页和90页的短文。
2.完成课本第139页Grammar review中的语法练习。
3.完成练习册中语法板块的练习。
拓展作业
与同桌合作，运用现在完成时和一般过去时谈论一个中国古代关于智慧的故事。
THANK YOU

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