(共27张PPT)
(一) 现在完成时的构成
现在完成时由“have / has +动词-ed形式”构成,其否定形式为“haven’t / hasn’t +动词-ed形式”。变一般疑问句时,将have / has提到主语之前。
e.g.
I have lost my pen.
Someone has broken the window.
I haven’t visited London before.
Ellen hasn’t finished her homework.
Have you seen the sea
Has the boy washed his hands
(二) 现在完成时的基本用法
1. 表示动作到现在为止已经完成或刚刚完成。
e.g. __________________________
我已经做完作业。
We have set up many new factories
_______________________
I have finished my homework.
我们已经建了许多工厂。
2. 动作发生在过去, 强调对现在的结果、
影响等。
e.g. Have you ever seen the film
“The Revenant”
______________________________
_______________________________
我已经在乡下住了三年。
你看过《荒野猎人》这部影片吗?
I’ve spent 3 years in the countryside.
3. 表示动作发生在过去, 并且一直持续到现在, 甚至还可能继续下去, 句中使用持续性动词, 且常有表示一段时间的时间状语。
e.g. We haven’t seen each other for ten years.
_____________________
我们已经十年没见面了。
4. 现在完成时可以用在条件或时间状语从句中, 表示将来某个时刻之前已经完成的动作。
e.g. I’ll go home as soon as I have
finished my homework.
_______________________
我做完作业就回家。
(三) 使用现在完成时的句型
1. 现在完成时可以表示过去发生或已经完成
的某一动作对现在造成的影响或结果,常
与already, yet, so far, up to now, till now等
连用。这类词还有just, recently, ever,
never, before等。如:
This is a lonely road. We haven’t met
another car so far.
We have kept our meetings secret up to now.
I have lived at home till now.
2. 现在完成时还可以表示从过去已经开
始, 一直持续到现在的动作或状态, 常
与since / for引导的词语, all one's life,
in recent years, “in the last / past +时间
段”等连用。如:
The building has been here since 1876.
The man has been in prison for five years.
They have lived in that city all their lives.
Henry has been ill in recent years.
She has been away from her family in the
last / past three years.
注意:此用法中的动词常是延续性的。短暂性动词的现在完成时的肯定式不能和表示一段时间的状语连用,需要用相应的延续性动词替换,常见的有:leave → be away; borrow → keep; buy → have; begin / start → be on; die → be dead; move to → live in; finish / end → be over; join → be in / be a member of; fall ill / asleep → be ill / asleep; catch a cold → have a cold; marry → be married; come / arrive → be。
3. 以下结构中that从句常用现在完成时:
1) This / It is the first / second / ... / last
time + that从句
2) This / It is (one of ) +形容词最高级
+ n. + that从句
e.g. This / It is the last time that he has
gone back to his hometown.
This / It is the most gorgeous
architecture that I have ever seen.
(四)现在完成时与一般过去时的区别
1. I lived in Taiyuan for 3 years.
2. I have lived in Taiyuan for 3 years.
这两个句子时间状语都是for 3 years, 但使用的时态不同, 表示的意义也不同。句1用一般过去时表示live这个动作在过去延续了三年, 和现在没有关系;句2用现在完成时表示live这个动作从过去开始延续至今, 甚至还可能持续下去。
I. 用括号内单词的正确形式完成下面对话。
Mom: What are you doing
Dad: I 1. _____________ (plan) to take the children to the beach this weekend.
Mom: That's great! We 2. ___________ (go, not) out for a long time.
Dad: Yes. It's been five months since we 3. ____________ (climb) the mountain last time.
haven't gone
am planning
have climbed
And this kind of weather is rare for this season.
Mom: So we must seize this chance and go to the beach. I will tell the children about this right away. They 4. _______ (be) very happy.
Dad: They 5. __________ (know) about it for quite a while. I 6. _____ (tell) them an hour ago.
told
will be
have known
They __________ many high-rise buildings in the city.
The traffic in the city _________ much worse recently.
plete each sentence with one of the verbs below. Use the present perfect tense.
build buy come get live see stay visit
have built
has got
3. When the tourists ________ in the
summer, they ________ in the city
centre.
4. Xiamen is one of the most attractive
cities John ___________.
came
stayed
has visited
5. Xiao Li ___________ in Xiamen all
his life.
6. John _____________ (not) any
presents yet but he ___________ a
shopping mall, where they will go
tomorrow.
has lived
has not bought
has seen
– How long ________ you ________
him
– I ___________ him since September.
2. He ____________ some money for me. I hope he pays me back next week.
borrow know leave live send
have
known
have known
has borrowed
3. The family ___________ in this town for twenty years.
4. _________ you __________ them the information they need
5. Why _________ he ________ Do you
have any idea
has lived
Have
sent
has
left
1. — Have you heard about the recent election
— Sure, it ________ (has been / is) the only thing on the news for the last three days. (2013 湖南)
has been
2. In the last few years, China ___ great achievements in environmental protection.
A. has made B. had made
C. was making D. is making
(2015 北京)
3. In my hometown, there is always a harvest supper for the farmers after all the wheat____ cut.
A. will have been B. will be
C. was D. has been
(2015 重庆)
1. Preview LISTENING AND VOCABULARY and try to complete the chart on page 35.
2. Preview PRONUNCIATION, EVERYDAY ENGLISH on page 37-38.
1. Review Grammar.
2. Complete the exercises in the
workbook.