-
since
和
for
的用法
(
用于现在完成时
)
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。
1. since :
a).since
+
时间点①年代
②时刻数
③一段时间
+ago
p>
b).
现在完成时:主句
(
主语
+have/has
+
延续性动词的过去分词
)+ since
+
从句一般
过去时
c) It’s
+
时间段
+since
+
短暂性动词的过去式
d).
时间段
+has passed
+since +
短暂性动词的过去式
for
+
一段时间
练习:
用
s
ince
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
12). He has lived in Nanjing
________ the year before last.
13).
I’ve known him __________ we were
children.
14). Our teacher
has studied Japanese _________ three years.
15). She has been away from the city
___________ about ten years.
16). It’s
about ten years __________ she left the
city.
2. for: for
+
一段时间
= since
+
一段时间
+ ago
3.
与时间段连用时,短暂性动词应改为相应的延续性动词。
1) come/go to ------ be at /in
2)leave ----be away from
3)buy ----have
4) borrow /lend
-----keep
4)open ---be open
5)close---be closed
6) die---be
dead
7) start/begin
----be on
8) join
—
--be in
/be a member of /be a soldier
9) become
–
be
10) fall asleep
---be asleep
11)catch a cold
–
have a cold
12)
have/has gone to → have
been in
13) put on →
wear
14) finish/end → be
over
15)
marry → be married
练习:
.
短暂性转换延续性
1)
His grandfather died two
years ago .
His grandfather has ____
____ for two years.
_____two years
_____ his grandfather ____.
Two
years ____ ____ ____ his grandfather _____.
2)
I
became a teacher in 2000.
I ________
__________ a teacher for
_________ _________.
3)
The shop closed two hours ago.
The shop ________ _________ _________
for _________ _________.
4)
The door opened at six in the morning.
The door ________ ________ ________ for
six hours.
5)
He
left Fuzhou just now.
He _______
________ ________ _________ Fuzhou for five
minutes.
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