资源简介

(共30张PPT)
Discover useful structure
the present
perfect continuous tense
一.现在完成进行时（Present perfect continuous） --概念
1.强调动作的持续性：表示动作从过去的某一时间点开始，一直持续
You have had a class for a few minutes.
You are having a class.
You have been having a class for a few minutes.
Do you know
CCTV 9
Yes, it has been broadcasting English programs since 2000.
Do you know
CCTV 9
Yes, it has been broadcasting English programs since 2000
2000
future
now
broadcast
broadcast
1.强调动作的持续性
2.强调动作的重复性：表示从过去到现在的一段时间内反复进行的动作。
Q:How long have you been learning English
A:I have been learning English for ten years.
一.现在完成进行时（Present perfect continuous） --概念
Gosh, is anybody in it I have been knocking at the door for half an hour!
Gosh, is anybody in it I have been knocking at the door for half an hour!
past
future
now
knock
knock
knock
2.强调动作的重复性
3.表示动作刚刚结束：该动作一般不再继续，有时表示结果
I have been painting the door, so my hands are very dirty.
The girl’s eyes are red, she has been crying.
一.现在完成进行时（Present perfect continuous） --概念
4.表示某种强烈的感彩,如：赞赏、批评、愤怒、失望等
You have been deceiving me!
Too much has been happening today.
今天真是一个多事的日子
一.现在完成进行时（Present perfect continuous） --概念
Oh, you have come at last! I have been waiting for you for two hours.
Here you are!
Sorry. i'm late.
Oh, you have come at last! I have been waiting for you for two hours.
Here you are!
Sorry. i'm late.
past
future
now
wait
4.表示强烈的感彩
Look at the sentences from the text and discuss the function of the tense.
表示动作从过去某时开始一直到说话时还在进行或可能还要继续下去。
表示在一段持续的时间内动作的多次重复，而这个重复的动作在说话时并不一定在进行。
P38 ...this is the adventure that I have been dreaming of.
P38 We are now camped on the ice and we have been managing to survive.
P39 We have been struggling for days, but...
表示某种强烈的感彩,如：赞赏、批评、愤怒、失望等。
Functions of the tense.
二.现在完成进行时（Present perfect continuous） --结构
1.肯定句:主语＋have/has been doing
“Human beings_____________(fight) one another since the beginning of time.”
——The Cost of War
have been fighting
2.否定句:主语＋have/has＋not been doing
“Human beings____________________(fight) one another since the beginning of time.”
——The Cost of War
haven’t been fighting
二.现在完成进行时（Present perfect continuous） --结构
3.疑问句:Have/has＋主语＋ been doing
“_____Human beings_____________(fight) one another since the beginning of time.”
——The Cost of War
been fighting
Have
have done
现在
完成
三.现在完成时&现在完成进行时---区别
现在 完成 进行 时？
be doing
result or activity
My hands are very dirty. l've been repairing my bike.
My bike is OK again now. l've repaired it.
result or activity
My hands are very dirty. l've been repairing my bike.
My bike is OK again now. l've repaired it.
“How many” or “How long”
She has read ten books this summer.
She has been reading that book all day.
“How many” or “How long”
She has read ten books this summer.
She has been reading that book all day.
“Completed” or “Continue”
I've written you an email.
I've been writing emails.
“Completed” or “Continue”
I've written you an email.
I've been writing emails.
Present perfect Present perfect continuous
现在完成时 have done 现在完成进行时 have been doing
结果 过程
多少 多久
完成 持续
证据
1) Thanks for the recipe book! We_________two different receipes so for.(try)
Answer: have tried(how many)
2）He ________ for the party for weeks.(prepare)
Answer: has been preparing(how long)
3) You’ve got white dust all over you! What have you______ (do)
Answer:been doing(evidence)
状态动词：be, have, exist;
情感动词：like, love, hate;
感观动词：see, hear, know, feel, sound;
短暂性动词：finish, marry, get up, come, go等。
I have known him for years.
I have been knowing him for years.
They have finished the work.
They have been finishing the work.
有些动词不能用于现在完成进行时，但可用于现在完成时.
下列句型中常用现在完成时
This (That/ It ) is the first (second…) time that + 完成时
This (That/ It) is the best/ finest / most interesting….+that+完成时
It’s the first time that I have been to the Great Wall.
This is the most interesting film that I have seen.

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