(共19张PPT)
一、教材语句回顾,判断黑体部分的时态
1.It has been six years since we last saw each other,you know.
时态:
2.And this is the first time I’ve visited your hometown.
时态:
3.You know, I’ve seen quite a lot of China and I’ve visited some beautiful cities, but this is one of the most attractive places I’ve been to.
时态:
4.Yes,they’ve just completed it.
时态:
5.They’ve put up a lot of high-rise buildings recently.
时态:
现在完成时 Present perfect tense
现在完成时 Present perfect tense
现在完成时 Present perfect tense
现在完成时 Present perfect tense
现在完成时 Present perfect tense
Present perfect tense
现在完成时
I ’ve seen quite a lot of China.
I’ve visited some beautiful cities.
They’ve just completed it.
They’ve put up a lot of high-rise buildings recently.
A friend’s told me about a nice little fish restaurant near here
It has been six years since we last saw each other,you know.
Look at these sentences
Form:
Usage:
1. An action completed in the past but
connected with the present situation.
have/has done
Grammar Present perfect tense
时态:现在完成时 构成:have/has+动词的过去分词
一、现在完成时表示过去发生的动作对现在造成的响影。
He has lost his wallet.他丢了钱包。
用法:动作已结束,但是现在没有钱花了。
She has read the book twice.
这本书她已经读了两遍。
用法:twice表示次数,常与现在完成时连用。
Up to the present everything has been going well.
到目前为止,一切进展顺利。
用法:up to the present意为“到目前为止”,与现在完成时连用。
归纳:现在完成时往往同表示不确定的过去时间状语连用,如:already,yet,just,before,recently,lately等,这种用法的动词多为短暂动词;还常与表示频度的时间状语如:often,ever,never,twice等连用;还可以同包括现在时间在内的时间状语如:now,up to now,so far,up to the present,till now,today等连用。
I lost my pen yesterday. 我昨天丢了钢笔。
(强调昨天的动作)
I have lost my pen. 我把钢笔丢了。(强调现在的结果)
He worked in that hospital 8 years ago.
我八年前在那家医院工作。(单纯指过去的动作)
He has worked in that hospital for 8 years.
他在医院已经工作了八年了。(强调动作一直持续到现
在)
考点延伸
1)现在完成时与一般过去时的区别
I won’t go to see the film,because I have already seen it.
我不会去看那部电影,因为我已经看过了。
I saw a film last week.
上周我看了一部电影。
归纳:现在完成时表示过去发生的动作对现在的影响,强调现在的情况,不与过去时间状语连用;一般过去时只表示过去的动作或状态,与现在没有关系,与过去时间状语连用。
2)句型:This/That/It is the+序数词+time+从句
This is the first time I have won in the game.
这是我在游戏中第一次获胜。
归纳:句型中从句中用现在完成时。
1 And you’ve lived here all your life …
2 I’ve worked for it for four years now.
3 …we’ve started a holiday club for children
4 A lot of children have joined it.
Look at these sentences from the passage. Decide which sentences …
A describe events that continue over a period of time
B describe events that happen at a particular point of time
A
A
B
B
A verbs to describe events that continue over a period of time
B verbs to describe events that happen at a particular point of time
Borrow buy give know leave live open put remain send stay
Put the words into two groups
A
B
Usage:
2. An action begins in the past and still
continues.
二、现在完成时表示动作或状态从过去开始,持续到现在(可能还会继续下去,也可能刚刚结束)
①His brother has worked in this factory since 1990.
他哥哥从1990年以来就在这家工厂工作。
考点延伸
1)阅读下列句子,指出与现在完成时连用的时间状语及意义
②It has been three years since I began to live on the farm.
自从我在农场居住以来已经三年了。
时间状语:since引导的时间状语从句 意义:自从……以来
③He left home two weeks ago and we haven’t heard from him since then/ever since.
他两星期以前离开了家,到现在我们一直没有他的消息。
时间状语:since then/ever since 意义:从那时以来
④We haven’t had a vacation for a long time.
我们好久没放假了。
时间状语:for a long time 意义:很长一段时间
⑤What have you been busy with these days
这些天来你忙什么呢
时间状语:these days 意义:这些天来
归纳:这种用法与表示一段时间的状语如:for...,since...,these days,in/over the past 10 years,this year等连用。since后跟过去的时间点,since引导的时间状语从句中用一般过去时;for后跟时间段。
2)句型:It is/has been+时间段+since...
⑥It has been half a year since I saw you last.
自从上次我见到你以来时间过了半年了。
3)短暂动词如:arrive,begin,borrow,buy,come,die,join,leave,finish等不能与表示一段时间的状语连用,如与时间段连用,须用相应的持续性动词如:be,have,keep等。
⑦I bought the new car a month ago.
=I have kept/had the new car for a month.
我买这辆新车已经有一个月了。
答案:1)have tried/have been trying 2)has increased
3)In order to find the missing child,villagers (do) all that they can over the past five hours.
4)—I remember you were a talented pianist at college.Can you play the piano for me
—Sorry,I (not play) the piano for years.
5)The manager (tell) the workers how to improve the program since 9 am.
6)The lift (break down),so I have to walk upstairs.
答案: 3)have done 4)haven’t played 5)has told 6)has broken down
一、现在完成时的基本概念
现在完成时表示动作发生在过去,强调过去的动作对现在的影响。现在完成时与现在有关,属于现在时态。
二、现在完成时的构成
肯定句 主语+have/has+过去分词
否定句 主语+have/has not+过去分词
疑问句 Have/Has+主语+过去分词……?
被动句 主语+have/has been+过去分词
today
Present perfect tense time expressions
this week
this month
ever , never
So far
all one’s life
these days
in the last ten years
these years
recently ,just,lately
till now
already, yet, before
in (during) the past three years
up to now
ever since
包含说话时在内
与说话时非常接近
Thank you
Bye!