Module 4 Seeing the doctor
模块语法专练
现在完成时(三)
1.现在完成时表示动作或状态从过去某一时刻开始一直持续到现在,常与“since+时间点”或“for+时间段”连用。for表示“经过(一段时间)”,而since表示“自从(……以来)”。例如:
I have lived in Hefei for ten years.我在合肥已经住了10年了。
He has been in this school since 2010.自从2010年起,他就在这所学校了。
My sister has learnt English since she was four.我姐姐从4岁起就开始学英语了。
2.在对现在完成时句子中的时间状语进行提问时,应用how long。例如:
—How long has Mary been a teacher?玛丽成为老师已经多久了?
—Since two years ago.自从两年前。
3.在现在完成时的肯定句中,非延续性动词一般不能与时间段连用。在表示持续一段时间的句中,应将非延续性动词转换为相同意义的延续性动词。
常见的非延续性动词转换为延续性动词:
|
非延续性动词
|
延续性动词
|
|
go,leave,move
arrive,come,reach
buy,get
finish,end
begin,start
die
lose
borrow,lend
|
be away (off),be out of
be here,be in+某地
have
be over
be on
be dead
be lost
keep/have
|
注意:在否定句中,非延续性动词可以与时间段连用。例如:
I haven’t seen him for a long time.我很久没见到他了。
I haven’t heard from her since she left.自她离开以后,我一直没收到她的来信。
Ⅰ.单项填空
(A)1.—Excuse me,where is Mr Brown’s office?
—Sorry,I don’t know.I here for only a few days.
A.have worked B.worked
C.work D.will work
(D)2.My grandmother a lot of changes in Tianjin since she came here.
A.sees B.cansee
C.willsee D.has seen
(D)3.I many new friends since I came here.
A.make B.made
C.willmake D.have made
(B)4.—Look at these stamps.I them for five years.
—Wow,they are wonderful.
A.kept B.have kept
C.have bought D.have brought
(D)5.I Mr Smith since he moved to Shanghai.
A.didn’t hear from
B.don’t hear from
C.won’t hear from
D.haven’t heard from
