内容正文:
介词
介词是虚词,在句中不能独立使用,后接名词、v.-ing形式或代词。
介词按构成可分为简单介词、合成介词、重叠介词、短语介词、分词介词。
1.简单介词
in
on
with
by
for
at
about
under
of等
介词
2.合成介词
into
within
throughout
inside
outside
without等
3.重叠介词
from among
从...当中
from behind
从...后面
until after
直至...之后
3.重叠介词
at about
在大约...
after about
在大约...之后 等
介词是虚词,在句中不能独立使用,后接名词、v.-ing形式或代词。
介词按构成可分为简单介词、合成介词、重叠介词、短语介词、分词介词。
4.短语介词
一个或两个简单介词和一个或几个其他词类构成一个短语,作用相当于一个介词,这就叫做短语介词。这类介词的末尾总是一个简单介词
according to because of by means of in addition to
in front of in spite of尽管 into等
5.分词介词
有极少数介词的词尾是“-ing”,形似现在分词(其中也有些可做分词)。
Considering regarding respecting including等
介词
一、表示时间的介词
1. in表示在一段时间之内。如:in the 1950s、in 1989、in summer、in January、in one's thirties在某人三十几岁时、in the morning等。
2. on表示具体某一天及某一天的上午、下午和晚上。如:on May 1st、on Monday morning、on a rainy night等。
3. at表示在一个时间点上。如:at 3:20, at this time of year, at Christmas, at (mid)night, at noon, at this moment等。
4. over用作介词时后面接一段时间,表示“超过…”或“在…期间”。如:over two months、over the past few years等。又如:
We had a pleasant chat over a cup of tea. 我们边喝茶边愉快地聊天。
介词
一、表示时间的介词
5. for用作介词时,后面接时间段,常用于完成时。
We have moved here for two years.
6. since用作介词时后接具体过去时间,表示“自从…以来”,主句用现在完成时。
We have not seen each other since two years ago.
7. 表示“一段时间之后”:“in+ 一段时间”常用于将来时;“after + 一段时间”常用于一般过去时。
My mother will come back in three days.
He arrived after five days.
介词
一、表示时间的介词
8. 在last, next, this, that, some, every等词之前不用介词。
He went to Japan last year. / We meet every day.
We enjoy a variety of colorful(丰富多彩的) activities for an hour, starting at 4:30 every weekday afternoon.
9. On / Upon + doing / n.表示“一…,就…”。
On hearing the shocking news, he burst into tears.
听到这个令人震惊的消息,他大哭起来。
Upon arrival, we began to work immediately.
到达后,我们立即开始工作。
介词
一、表示时间的介词
10. by后面接时间,表示“到…为止”,常用完成时。
He has read about 40 pages of the book by now. (现在完成时)
到目前为止,他已经读了大约40页的书。
We will have accomplished the work by next month. (将来完成时)
到下个月我们将完成这项工作。
By the time I get home,