since-与-for-的用法
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2021年01月28日 20:03
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咱老百姓歌谱-小虎队爱的歌词
since-
与
-for-
的用法
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
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
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
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) h
ave/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.
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