内容正文:
主语 + have/ has + V-过去分词(done)
助动词, 无意义
一、现在完成时的构成(The Present Perfect Tense)
Winter has already come .
冬天已经来临。
1
二、常与现在完成时连用的时间状语有:
already 已经(肯定句) yet 还(否定句);已经(疑问句)
recently/lately 最近 never 从未
ever since 自...以来,从...以后 ever 曾经
so far/up to now 迄今为止 by now 到现在为止
for a long time 很长一段时间 since then 从那时起
in recent years 在最近几年里
in/during/over the past/last years 在过去的几年里
for+时间段 since+时间点
2
三、现在完成时的被动语态的构成
(时态和语态结合,先体现时态,后体现语态)
现在完成时:have/has done
被动语态: be done ( by ...)
现在完成时的被动语态:主语 + have/has been done (by…)
表完成
表被动
结构
3
时 态 主动语态 被动语态
1 一般现在时 do/does am/is/are+过去分词
2 一般过去时 did was/were+过去分词
3 一般将来时 will+动词原形 will+be+过去分词
4 现在进行时 am/is/are+现在分词 am/is/are+being+过去分词
5 过去进行时 was/were+现在分词 was/were+being+过去分词
6 现在完成时 have/has+过去分词 have/has+been+过去分词
7 过去完成时 had+过去分词 had+been+过去分词
8 含情态动词 情态动词+动词原形 情态动词+be+过去分词
主动和被动语态谓语结构对照表
4
Let’s observe the sentences together.
1.New teaching buildings have been built in our school.
2. A gym has been built in our school.
3. The track and field has been built in our school.
4. A new road has been built near our school.
5. A railway station has been built in our county(县).
现在完成时被动语态的定义:
现在完成时的被动语态表示说话时已经完成的被动性的动作或结果,主语和谓语之间为被动关系,主语是动作的承受者。常译为“......已经被做”
5
5
肯定式: 主语 + have/has been done(V-过去分词)
否定式: 主语 + have/has not been done...
一般疑问式: Have/Has + 主语 + been done...?
特殊疑问式: 疑问词 + have/has + 主语 + been done...?
四、现在完成时的被动语态的句式结构
6
1.找标志:找到句中常与现在完成时连用的副词或时间状语,确定时态;
2.圈主语:找到句中的主语,判断是否为第三人称单数,确定单复数,用have/has;
3.定语态:确定主语与谓语动词之间的被动关系
五、现在完成时的被动语态的解题步骤
7
1. Paper money ____________ (use) for over a thousand years.
2. — _____ the letter __________ (give) to Mr. Black?
— No. It’s still on the desk.
3. Great changes _________ __ (take place) in my hometown and a lot of factories ____________ (set) up.
has been used
Has
been given
have taken place
have been set
随堂练习:
take place 是不及物动词短语,没有被动形式。
解题步骤:
1.找标志
2.圈主语
3.定语态
8
1.He _________________________(recognize) as a role model since he entered senior high school.
2.In the past year I _____________________ (inspire) to buy e-books instead of paper books.
3.A: Where can I read those comments?
B: Online. They _____________________ (post) already.
4.Both learning sites _____________________ (visit) by over 10, 000 people since last year.
5.The system ______________________(design) to give the users quick and easy access to the required information since last year.
6.This keyboard _____________________ (not use) for a long time.
7.Tom as well as two of his friends_____________________(invite) to the party so far.
8.We’ve done a lot of work on it, but we ___________________________ (not finish) yet.
9.Wildlife _________________________ (threaten) greatly by human expansion in the last few years.
10.—My car ______________________(damage) seriously. Don’t you see that?
—Just tell me what you want for the damage.
11.Up to now, a number of tests ________________________ (conduct) to make sure that it has no side effects.
12.The new technology ______________________________(apply) to farming up to now.
13.For the past three years he _________________________________(employ雇佣) as a firefighter.
has been recognized
have been inspired
have been posted
have been visited
has been designed
hasn’t been used
has been invited
haven’t been finished
has been threatened
has been employed
has been damaged
have been conducted
has been applied
9
14.Up to now, no conclusion___________________(reach) about who the first prize should go to.
15.So far more than one generation of schoolchildren _____________________(amaze) by Franklin’s bravery and scientific approach to looking for truth.
16.A peaceable settlement ____________________(reach) so far by the two sides.
17.All the evidence _______________________ (destroy) in the past few hours, yet the police are still doing all they can to break through.
18.Fifty percent of my task ________________________ (do) so far.
19.Three grand bridges ________________________ (build) over the Changjiang River in Wuhu so far.
20.The children were amused to see that the man ____________________ (fool) by them.
21.Large quantities of water in the lake _____________________ (pollute), terrible smells coming out from time to time.
22.We are confident that the environment ________________________ (improve) by our further efforts to reduce pollution.
23.Nine spacecrafts ________________________ (send) to study Jupiter(木星) by now. The most recent was Juno, which arrived at the planet in July 2016.
has been reached
has been amazed
has been reached
has been destroyed
has been done
have been built
had been fooled
have been polluted
has been improved
have been sent
10
24.His sister left home in 1998, and ________________ (hear) of since.
25.It ________________ (prove) already that what he said the other day is true.
26.You can use my computer to type the report because it ________________ (repair) already.
27.So far it ______________ (confirm) that the meeting will take place next week.
28.Thanks to the new technology, costs ________________ (reduce) by 20% over the past year.
29.The fine tradition, which ________________ (observe遵守) for 2000 years, shouldn’t be ignored by any of us.
30.Professor Wang, as well as his two students, ________________(employ) to the university recently.
31.In recent years more uses ________________ (find) for this material with the development of science.
32.For thousands of years, the festival _________________ (mark) by eating Zongzi and racing dragon boats in honour of Qu Yuan.
33.The world ________________ (turn) upside down since the invention of the Internet.
34.Till now, a total of ten companies ________________ (establish) in his name.
35.Up to now,no conclusion(结论)________________(reach) about who the first prize should go to.
36.More than 100 famous films ________________ (show) in the city since July.
hasn’t been heard
has been proved
has been repaired
have been found
has been turned
has been marked
have been established
have been shown
has been employed
has been observed
has been confirmed
have been reduced
has been reached
11
37.It is the first time that the technique _____________________ (use) to document(v.记录) how the brain processes grammar and produces words.
38.Financial problems of the company _____________________________(discuss) for nearly two hours.
39.Many a way _____________________ (use) to prevent the pollution, but the sky is still not clear.
40.In the 1950s in the USA, most families had just one phone at home, and wireless phones _______________________________ (not invent) yet
41.It is the first time that I____________________________ (invite) to give a lecture to the children.
42.Although both sides have been making efforts, no conclusion________________________(draw) up to now.
43.Large quantities of food____________________(send) to the countries struck by the earthquake so far.
44.Over the past several years, I________________________(inspire)to get close to nature and learn from experience.
45.Costs________________________________(reduce) by 20% over the past years.
has been used
have been discussed
has been used
haven't been invented
have been invited
has been drawn
have been sent
have been inspired
have been reduced
12
$