内容正文:
介词 Prepositions
Grammar
语法专项:
什么是介词?它的作用是什么?
1.Look at me.( )
2.He goes to school by bike.( )
3.He is interested in drawing.( )
4.Tom was surprised at what she said.( )
代词
名词
动名词
从句
介词:是一种虚词,不能独立使用,后加宾语(n./ pron./ v-ing/ 宾语从句)构成介宾结构/ 介宾短语。
介词的主要分类:
1. in summer, on Septemper 1st ___________
2. at the cinema, in the hospital __________
3.Write with a pen, go by bus ___________
4. by the way, at last, in the end ___________
地点介词
方式介词
时间介词
其他/固定搭配
时间介词:
1.in,on,at
2.before,by,after,in
3,for,since
4.from ,during……
1
in 年、月、季节、世纪、时代、及非特指的早、午、晚
on 具体某一天、某天早上、下午(日、星期、节日)
at 表示具体的时间点(短暂的时间)
/ 这那上下每个前,in,on,at都不填
①___ 2008,___January,___ Spring,___ the morning/afternoon/evening,
___the 21th century,___the 1980s,____one’s sixties
② ___ January fifth,___Monday ,___Sunday morning,
___ Christmas Day,___ New Year's Day
③ ___ 4:30,___noon ,___ midnight,___that time
④this afternoon/that evening/last Monday/next week/every day
in
in
in
in
on
on
on
on
on
at
at
at
at
in
in
in
after “…之后”,+时间点:一般将来时,+时间段:过去时
in +时间段,表示“(从现在起)……之后/内”,用于将来时
After 20 hours,we arrived at Los Angeles Airport.
He will come back after two o’clock.
My father will be back in two weeks.
2
他两点后回来。
我爸爸两周后回来。
20小时之后,我们到达了洛杉矶机场。
before 表示在...之前,强调先后顺序
by 后接时间点,表示“在…之前,到……为止”
till/until “直到……止”,till不用于句首
3
Wash hands before dinner.
Please reply to me by next Friday.
We had learned 1,000 English words by the end of last term.
We waited till/until 10:00 last night.
到上个学期末,我们已经学了1,000个英语单词。
饭前洗手。
请下周五前回复我。
如果by后跟一个过去的时间点,句子应用过去完成时
昨天晚上我们一直等到了10点。
from “从某一时间点开始” from now on,from … to…
since “自…以后,自…以来” 后接过去的时间点或一段时间+ago since 5 years ago
for 表示动作的延续,后加一段时间for a long time
during “在……期间” during his illness,during her childhood
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 B. since C. for
1.We us