1、2.表示时间的介词表示“时间”的介词如下:1.表示年、月、日、时刻等用at,in,on2.表示时间的前后用 before, after3.表示期限等用by,until,till4.表示期间等用for,during,through5.表示时间的起点等用 from, since6.表示时间的经过等用in,within1 at,on,in1.at:用于表示时刻、时间的某一点at noon正午时at night在夜间at present目前at nine(oclock)在九点钟We usually have lunch at noon(at twelve).我们通常中午吃午饭(十二点吃午饭)。2.on
2、:用于某天,某一天的上、下午(指具体的某一天时,一律用on)注意泛指一般的上午(下午)时用in,但特指某日的上午(下午)时用on。in the morning在早上on sun day morning在周日早上on Monday在周一on Tuesday morning在周二早上on June 6在6月6日on May 4,1996在1996年5月4日on a cold night在一个寒冷的夜晚on the night of July(the) first在七月一日的夜晚We didnt listen to the lecture on Wednesday afternoon上周三下午我们没
3、去听演讲。3.in:用于表示周、月、季节、年,泛指的上午、下午、晚上。注意在this,last,next,every等词前面不能再加介词。this morning今天上午last Friday 上周五next Sunday下周日every Monday(week, spring)每周一(每星期,每个春季)in the week在这周in May在五月in spring在春季in 1995在1995年in September,1995在1995年9月in the morning在上午in the afternoon在下午in the evening在晚上People go skating in
4、winter人们冬天去滑冰。2 before,after1. before:在之前Wash your hands before dinner.(before作介词)吃饭前请洗手。He will call me before he leaves here.(before作连词)他离开这儿之前,他将给我打电话。2.after:在之后注意before和after这两个词都是既可作介词,又可作连词。Lets Sing some songs after school.(after作介饲)放学后咱们唱歌吧!Pleas close the door after you leave the room.(aft
5、er作连词)离开房间后请关门。3 by,until(till)1. by:在前(时间);截至(到)注意由until(till)形成的句子,句中的动词如果是点动词,则必须用否定句。How many English books had you read by the end of last year?到去年年底以前你看过多少本英文书?2.until(till):直到为止(时间)比较by和until by seven oclock截至(到)7点钟(一般和完成时连用)until seven oclock直到7点(7点以前)We didnt begin to watch TV until(till) n
6、ine oclock.(begin是点动词,所以用否定式)一直到九点,我们才开始看电视。Ill wait for him until he comes here我将在这儿一直等到他来。(wait是延续动词,用肯定式)注意until和till可以通用。它们可以作连词(见上例)而by不能作连词。4 for,during,through1.for:达之久(表示经过了多少时间)必背!常用的短语for a year 一年for a few days几天for twenty weeks 二十周during the lesson 上课期间during the war (the night)战争期间,夜间 (
7、一整夜)可以和一般现在时、过去时、将来时连用,但经常和完成时连用。He has lived here for 20 years.他在这儿已经住了二十年了。We will stay in the city for two days.我们要在那里呆两天。2.during: 在期间They are going to have a good rest during the summer holidays.暑假中他们打算好好休息一下。比较for和duringfor之后大多跟表示时间、天数等的数字名词。而during后决不能跟表数字的名词。3 through:一直(从开始到结束)They played t
8、he cards through the night.他们打了一整夜的牌。5 from,since1.from:从起(时间)表示从开始时,一般都是用词组fromto,而单纯表示确切的从几点开始时用at。The meeting will be held from eight to ten.这个会议将从8点开到10点。The meeting will be held at eight.会议将从八点钟开始。比较since和from since表示时间时,一般只用于完成时的句子;而from也用于现在时、过去时及将来时态。另外since还可以作连词(见下例);而from则不可以,它只能作介词。2.sin
9、ce:自从以来(表示从以前某时一直到现在仍在继续)I have been sick since yesterday.我从昨天就病了。(一直到现在)The doctor has saved a lot of lives since he became a doctor.(since作连词)这个医生自当医生以来已经拯救了许多人的生命。6 in,within1.in:过后(未来时间)注意如果用于过去时,用after +时间。She went to Nanjing last May,and she came back after a month.去年五月她去了南京,一个月之后她又回来了。大多用在将来时
10、(一般将来时和过去将来时)。in an hour 一小时之后in a week or so 一个多星期之后He will be back in five hours.他五小时之后回来。They said they would arrive here in a week.他们说他们一周后到达。2.within:不超过的范围比较within和in with in强调在时间之内,没有时态的限制。in是以现在为基准,in an hour是指从现在起1小时之后,所以一般只用于将来时。within 3 hours 3小时之内I must finish painting the cat within fiv
11、e minutes.我必须在五分钟之内画好这只猫。They worked hard. They finished the workwithin 2 days at last.他们努力工作,结果终于他们在两天之内完成了这项工作。表示时间的介词 练习题用适当的介词填空 She will be back a week.(再过一周)1. She will be back a week.(在一周之内) I shall stay here five.(到五点为止)2. I shall stay here five.(最迟在五点以前) We stayed in London two weeks.(经过两周)3. We stayed in London the summer vacation.(在暑假期间)【答案】1in, within2until ( till ), by3for, during