







英语必修1Module 4 A Social Survey -- My Neighbourhood图文ppt课件
展开Mdule 4A Scial Survey -
现在完成时(Present perfect tense)
(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 lst my pen.Smene has brken the windw.I haven’t visited Lndn befre.Ellen hasn’t finished her hmewrk.Have yu seen the sea?Has the by 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 factries _______________________
I have finished my hmewrk.
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 yu 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 cuntryside.
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 ther fr 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 g hme as sn as I have finished my hmewrk. _______________________
(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, s far, up t nw, till nw等 连用。这类词还有just, recently, ever, never, befre等。如: This is a lnely rad. We haven’t met anther car s far. We have kept ur meetings secret up t nw. I have lived at hme till nw.
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 / fr引导的词语, all ne'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 prisn fr five years. They have lived in that city all their lives. Henry has been ill in recent years. She has been away frm 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; brrw → keep; buy → have; begin / start → be n; die → be dead; mve t → live in; finish / end → be ver; jin → be in / be a member f; fall ill / asleep → be ill / asleep; catch a cld → have a cld; marry → be married; cme / arrive → be。
3. 以下结构中that从句常用现在完成时: 1) This / It is the first / secnd / ... / last time + that从句 2) This / It is (ne f ) +形容词最高级 + n. + that从句e.g. This / It is the last time that he has gne back t his hmetwn. This / It is the mst grgeus 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 fr 3 years.2. I have lived in Taiyuan fr 3 years. 这两个句子时间状语都是fr 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。Mm: What are yu ding?Dad: I 1. _____________ (plan) t take the children t the beach this weekend. Mm: That's great! We 2. ___________ (g, nt) ut fr a lng time.Dad: Yes. It's been five mnths since we 3. ____________ (climb) the muntain last time.
haven't gne
am planning
have climbed
And this kind f weather is rare fr this seasn.Mm: S we must seize this chance and g t the beach. I will tell the children abut this right away. They 4. _______ (be) very happy.Dad: They 5. __________ (knw) abut it fr quite a while. I 6. _____ (tell) them an hur ag.
have knwn
They __________ many high-rise buildings in the city. The traffic in the city _________ much wrse recently.
II. Cmplete each sentence with ne f the verbs belw. Use the present perfect tense.
build buy cme get live see stay visit
3. When the turists ________ in the summer, they ________ in the city centre.4. Xiamen is ne f the mst attractive cities Jhn ___________.
has visited
5. Xia Li ___________ in Xiamen all his life.6. Jhn _____________ (nt) any presents yet but he ___________ a shpping mall, where they will g tmrrw.
has nt bught
– Hw lng ________ yu ________ him? – I ___________ him since September.2. He ____________ sme mney fr me. I hpe he pays me back next week.
brrw knw leave live send
3. The family ___________ in this twn fr twenty years.4. _________ yu __________ them the infrmatin they need?5. Why _________ he ________? D yu have any idea?
1. — Have yu heard abut the recent electin? — Sure, it ________ (has been / is) the nly thing n the news fr the last three days. (2013 湖南)
2. In the last few years, China ___ great achievements in envirnmental prtectin. A. has made B. had madeC. was making D. is making(2015 北京)
3. In my hmetwn, there is always a harvest supper fr 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 t cmplete the chart n page 35.2. Preview PRONUNCIATION, EVERYDAY ENGLISH n page 37-38.
1. Review Grammar.2. Cmplete the exercises in the wrkbk.
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