-
现在完成时
Since
和
for
的用法
Since
和
for
的用法
表示过去已经开始持续到现在的动
作或状态常用的时间状语有：
for,
since,
how
long,
so
far,
these
days
等。
Since+
过去点的时间，
for+
一段时间
(
数词
+
量词
)
，此划线部分用
how
long
提问。
一、
si
nce
短语或从句表示过去的动作延续至今，
since
之后的时间为一点。
如：
Mr.
Smith
has
worked
here
since
1984.
1984
年以来，史密斯
先生一直在这工作。
He’s
learned
about
5,000
English
words
since
he
went
to
college.
他上大学以
来大约
学了五千个英语单词。
二、
for
短语表示动作延续多长时间，
for
的宾语为时间段。
如：
We
have
known
each
other
for
twenty
years.
我们认识有二十年了。
I
haven’t
seen
her
for
a
long
time.
我好久没有见到她了。
练习：用
since
和
for
填空
1)
______
two
years
2)
_______
two
years
ago
3)
_______
last
month
4)
______
1999
5)
_______
yesterday
6)
_______
4
o’clock
7)
______
4
hours
8)
_______
an
hour
ago
9)
_______
we
were
children
10)
_____
lunch
time
11)
______
she
left
here
1.
He
has
lived
in
Nanjing
________
the
year
before
last.
2.
I’ve
known
him
__________
we
were
children.
3.
Our
teacher
has
studied
Japanese
_________
three
years.
4.
She
has
been
away
from
the
city
___________
about
ten
years.
5.
It’s
about
ten
years
__________
she
left
the
city.
2.
短暂性转换延续性
①
arrive
at/in
sw.
get
to/reach
sw.
come/go/move
to
sw.
→
be
in
sw./at
school/at
home/on
the
farm/be
here/be
there
1)
He
got
to
Beijing
five
minutes
ago.
He
________
_________
_________
Beijing
for
_________
_________.
2)
I
moved
to
the
USA
last
year.
I
________
________
__________
the
USA
since
__________
__________.
3)
I
went
home
yesterday.
I
_______
________
_________
home
for
_________
__________.
4)
They
came
here
last
week.
They
_________
_________
here
since
_________
__________.
②
come/go
back,
return
→
be
back
come/go
out
→
be
out
1)
He
came
out
two
years
ago.
He
_________
__________
_________
for
__________
__________.
2)
We
return
to
Fuzhou
yesterday.
We
________
________
_________
to
Fuzhou
since
__________.
③
become
→
be
1)
I
became
a
teacher
in
2000.
I
________
__________
a
teacher
for
_________
_________.
2)
The
river
became
dirty
last
year.
The
river
_________
_________
dirty
for
_________
__________.
④
close
→
be
closed
open
→
be
open
1)
The
shop
closed
two
hours
ago.
The
shop
________
_________
_________
for
_________
_________.
2)
The
door
opened
at
six
in
the
morning.
The
door
________
________
________
for
six
hours.
⑤
get
up
→
be
up
die
→
be
dead
leave
sw.
→
be
away
from
sw.
fall
asleep/get
tot
sleep
→
be
asleep
finish/end
→
be
over
marry
→
be
married
1)
I
got
up
two
hours
ago.
I
________
________
________
since
________
________.
2)
He
left
Fuzhou
just
now.
He
_______
________
________
_________
Fuzhou
for
five
minutes.
3)
My
grandpa
died
in
2002.
My
grandpa
_______
_______
________for
_______
________.
4)
The
meeting
finished
at
six.
The
meeting
________
______
______
for
six
hours.
5)
I
got
to
sleep
two
hours
ago.
I
________
_________
_________
since
_________
__________.
6)
They
married
in
1990.
They
________
_________
__________since
_________.
⑥
start/begin
to
do
sth.
→
do
sth.
begin
→
be
on
1)
I
began
to
teach
at
this
school
in
1995.
I
____
____
at
this
school
since
____.