英语必修二人教UniComuersgrammar.pdfVIP

ThePresentPerfect

PassiveVoice

现在完成时的被动语态

现在完成时态中的时间状语

★现在完成时常与already,always,often,ever,

never,yet,not...yet,just等模糊的时间副词连用。

★还可以和表示跟现在有关的或者一直延续到

现在的时间状语连用。如:now,today,this

month,thisyear,latelyrecently,thesefewdays,

inthepast10years,inthelastfewyears,sofar,

uptonow,eversince等。

课文内容复习：用动词正确形式填空．

havebeenused

1.FirstasaPCandthenasalaptop,I(use)

inofficesandhomessincethe1970s.

hasdeveloped

2.Overtimemymemory(develop)so

muchthat,likeanelephant,Ineverforget

havebeentold

anythingI(told).

3.Sincethe1970smanynewapplications

havebeenfound(find)forme.

4.Ihavealsobeenput(put)intorobotsandusedto

makemobilephonesaswellashelpwithmedical

operations.

haveevenbeenput

5.I(put)intospacerocketsandsent

toexploretheMoonandMars.

1.现在完成时的被动语态构成：

have/has(not)+been+过去分词

2.现在完成时的被动语态特点：

●主语是行为动作的承受者

●谓语动词表示动作已经完成

例如：

Ihavebeentoldaboutitmanytimes．

Thebridgehasjustbeenbuilt．

Changethefollowingsentencesintothe

presentperfectpassivevoice.(见课本P21)

1.Anewpersonalcomputerhasbeenbought

bymyfriend.

2.Mycomputerhasbeenrepairedbytheshop

veryquickly.

3.Mycomputerhasjustbeenattackedbyan

unknownvirus.

4.Theproblemhasnotbeensolvedbyusyet.

5.Thecomputershavebeengivenawaytoa

localschoolbythecompany.

6.Akindofintelligentrobothasbeen

developedbythescientists.

Exercises

1.

Both

my

brother

work

at

the

power

station

that

___

in

my

hometown.

A.

has

set

up

B.

has

been

set

up

C.

was

set

up

D.

is

set

up

2.