at_on_in等介词的使用.ppt

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1、at/on/inat/on/in(时间)请比较at，on与inTheyarrivedat5o’clock.TheyarrivedonFriday.TheyarrivedinOctober./Theyarrivedin1968.①at用来表示一天之内的某个时间：at5o’clockat11.45atmidnightatlunchtimeatsunsetat用于下列短语atnightattheweekend/atweekendsatChristmastime/atEaster(但onChristmasDay)atthemomentatpresent.atthesam

2、etime②on用来表达星期几和几月几日，具体的时间：onFriday/onFridayson12March1991onChristmasDayonmybirthday③in来表达较长的时间（例如：月、季、年），时间段inOctoberin1968inthe18thcenturyinthepastin(the)winterinthe1970sIntheMiddleAgesin(the)future注意疑问句通常用Whattime…?(通常不用atwhattime…?)Whattimeareyougoingoutthisevening?可以说：inthemorni

3、ng(s)intheafternoon(s)intheevening(s)Iwillseeyouinthemorning.Doyouworkintheevenings?但要说：onFridaymorning(s)onSundayafternoon(s)onMondayevening(s)andsoonI’llbeathomeonFridaymorning.DoyoureallygooutonSaturdayevenings?last/next/this/every前不用at/on/in:IwillseeyounextFriday.(而非onnextFriday)

4、TheygotmarriedlastMarch.in+一段时间表示将来某时：Thetrainwillbeleavinginafewminutes.(从现在开始的几分钟后)Jackhasgoneaway.He’llbebackinaweek.(从现在开始的一周后)Shewillbehereinamoment.(一会)还可以说insixmonths’time,inaweek’stimeTheyaregettingmarriedinsixmonths’time.(或…insixmonths)还可以用in表示“用…时间”Ilearnttodriveinfourweeks

5、.(我学驾驶用了四周时间)用at,on或in+下列词语完句子。theeveningthemoment1492ChristmasSaturdaymorningthemorningabout20minutespresentOnInAt用at,on或in+下列词语完句子。21July1969the1920sthesametimeSundaystheMiddleAges11secondsnightspringnextFridayOnInAt×