初中英语Unit 3 Language in use教学演示课件ppt

这是一份初中英语Unit 3 Language in use教学演示课件ppt，共13页。PPT课件主要包含了注意事项，同义句转换，since，for等内容，欢迎下载使用。
I haven’t dne much exercise since I gt my cmputer last year.I have had him fr three mnths nw.Since then, it has becme part f my life.
现在完成时表示在以前某个时间已经发生的行为或曾经做过的事情对目前有某种影响或结果(这种影响或结果现在还存在)。
We have seen the film tw weeks befre.
I have tld him the bad news.
过去看了电影，并且了解电影内容
过去告诉他坏消息，并且他已经知道了消息内容
现在完成时可以用来表示发生在过去某一时刻的,持续到现在的动作(用行为动词表示)或状态(be动词表示)。
My uncle has wrked in the factry fr three years.
He has been ill fr abut three days!
三年前到现在一直在这个工厂
三天前到现在一直在生病
1. 这类句子通常包含由fr或since引导的时间状语（从句），fr后接段时间，since后接时间点。
I have lived in Beijing fr 10 years.
I have been in this schl since 2000.
Since then, We have becme friends.
2. 用hw lng对现在完成时的时间状语提问。
Hw lng have yu lived in Beijing?
Hw lng have yu been in this schl?
3. 在现在完成时的句子中,终止性动词一般不能与表示延续的时间状语连用。
汤姆已经来了两小时了。( )Tm has cme fr tw hurs. ( )Tm has been here fr tw hurs.
终止性动词与延续性动词如何转换
(1) 转化为“be+形容词/副词等”。
die → be deadleave → be away (frm)pen/clse → be pen/clsed stp → be ver arrive in (at)/reach/get t → be in/at jin → be a member f/ be in start/begin → be n
They have left fr tw years.
They have been away fr tw years.
I have arrived at this twn fr a lng time.
I have been at this twn fr a lng time.
My brther has jined the army since last year.
My brther has been in the army since last year.
(2) 转化为意思相同的延续性动词。
brrw → keep buy → have/ wn becme/ cme → be get t knw → knwput n → wear/ be n
I have bught the new bike fr a mnth.
I have had the new bike fr a mnth.
He has brrwed this bk since last week.
He has kept this bk since last week.
The girl has cme t the city fr three years.
The girl has been in the city fr three years.
1. Her parents came t China five years ag. Her parents _____ _____ _____ China since five years ag.2. Susan bught this cat tw days ag. Susan _____ ______ the cat _____ tw days ag.3. He jined the army in 2009. He _____ _____ a sldier _____ three years.4. I began t play the pian ten years ag. I _____ ______ the pian _____ ten years.
have been in
has had
has been
have played