2. Our manager came back ___ an hour.
A. in B. after C. at
3. They have been here __ an hour.
A. for B. after C. in
3. for + 时段
since + 时段 + ago
常用于现在完成时
since + 时间点 /doing
A. before B. after C. by
2.The work must be finished __ Friday.
A. at
B. by
C. after
3.We______________(learn)2,000 English words by now/by the end of this term /by last month.
4. The old man has been away ___ two
years ago.
A. in
B. since C. for
5.They haven’t seen Alice __s_in_c_e_ last year.
4. before 在……之前 by 到……时为止,不迟于……
1.He won’t come back ___ five .
有修饰上午/下午/晚上以及一些习惯用法
中要用介词 on。
2.
在……之后（内）用于将来时
在……之后
用于过去时
in + 时间段 after +时间段
1. Mr Brown has gone to Canada. He will
be back ___ two weeks.
A. for B. after C. in
B. since C. for
3.Tom has worked for three years
since__g_r_a_d_u_a_t_i_n_g_(graduate)from college.
3. It has been three years since he __ here.
A. come B. came C. comes
in+ future ;an hour
• 表示较长时间如：世纪、年代 、月份、 季节、上午/下午/晚上以及一些习惯用法 中要用介词in。
at+ 7.30; the age of 19; noon/ night/
midnight; lunchtime; first/ last；
at Christmas
• 表示某一时间点如：钟点、节日、年龄、 中午/夜晚/子夜、就餐时间或其它的习惯 用法中要用at。
Monday; March 22nd, 2015; a warm
on spring;Children’s Day; a cold morห้องสมุดไป่ตู้ing;
• 表示某一天或者特定的时间如：星期、某 月某日、某年某月某日、含Day的节日、
A. on B. in
C. over
people over/under 18
2. above 在……上方 below 在……下方,是above的反义词
1. The temperature will fall__ zero at night. A. below B. above C. over
2.Suddenly there is a loud voice ___ the tree. A. below B. above C. on
between表示在两者之间, among表示“在……中” 数目为三者或三者以上, around表示围绕在四周。 • beside表示“在旁边”, inside表示“在……内”,
outside表示“在……外” 。 • near/by/next to表示“在……旁边” 。 • opposite表示“在……对面” 。
二.地点介词 Conclusion:
• at一般指小地方；in一般指大地方或某个范围内。
• over, above和on均表示“在……上面”,over反义 词是under; above反义词是below; on指两个物体 表面有接触。
• in front of 表示“在……前面”, 其反义词是behind in the middle of 表示“在……的中间” 。
A. at, in B. in, on C. in, at
4. in 里面，排、行、组 on 左、右边 at 前、后部
We are __Team One. I sit __the front of the classroom. Li Ping is ___my left. A. on, in , at B. in ,in ,at C. in, at, on
since + 一般过去时句子
1.He came here __ 1992, and he has lived
here ___ 1992.
A. in, for
B. in , since
C. since, since
2.I have known Li Lei __ over five years.
A. in
3.Tom lives two floors above /below me.
3. in + 大地方 at + 小地方 on +门牌，某层楼
1.My uncle live ___ Flat12 __the fifth floor. A. at, on B. in, on C. on, at
2.They arrived ___Beijing at 12:00 and waited for a bus ___ the station to the hotel.
牛津初中英语第一轮复习语法系列讲解 3： 介词
Prepositions
一.表示时间介词 二.表示地点介词 三.表示方位介词 四.表示方法、手段 五.常见介词的搭配
时间介词 in, on at
the 21st century; the 1990s;2010; March; spring; the morning; the
1.on 在……的上面,与表面接触
over 在……的正上方,不接触表面
under 在……下面(是on, over的反义词)
1.Look!There is a bridge __the river.
A. on B. over C. above
2.Can you see the egg ___ the plate?