什么是介词?它的作用是什么?•1.Lookatme.()•2.Hegoestoschoolbybike.()•3.Heisinterestedindrawing.()•4.Thebookisonthedesk.()代词名词动名词介词:通常用在_________、_______、_______之前,表示某个人、事物/东西、事件与另一个之间的_________。名词代词名词动名词关系我们理一理Classification:方位介词时间介词方式介词上,下,左,右,里,外……InEnglish英语中有哪些介词可以表示方位?表示上面,下面,里面:on,under,in,over表示前,后,中间:infrontof,behind,between表示相邻,旁边:near,beside,nexttoon,under,in,overon:在……上面over:在……上方under:在……下面in:在……里面练一练:translatesentences1.电脑在书桌上面。Thecomputerisonthedesk.2.墙上有一面镜子。Thereisamirroronthewall.3.你在哪里呢?我在房间里。Whereareyou?I’mintheroom.4.看!球在椅子下面。Look!Theballisunderthechair.5.河上面有一座桥。Thereisabridgeovertheriver.infrontof,behind,betweeninfrontof:在……前面behind:在……后面between:在两者之间注意:between表示在……之间,但仅仅是两者之间。between还有抽象的用法。near,beside,nexttonear:在……附近(有距离)beside:与……紧挨着(通常是左右)Nextto:与……相邻(通常有顺序关系)我的座位在门旁边。Myseatisnearthedoor.那条公路紧挨着河流。Theroadisbesidetheriver.练一练:请用infrontof,behind,between和near,beside,nextto描述教室中人,物之间的方位关系。e.g.赵老师在墙壁前面。Mr.Zhaoisinfrontofthewall.Iwasborn_____June1,1992.Iwasborn___Children’sDay.Iwasborn_____June,1992.Iwasborn_____1992.好郁闷啊!分不清了耶!!!ininonon时间介词表示在什么时候早上,下午,晚上,6点,20点……atinonafterbeforeforfrom……toatinonAt:某一时间点Johngoestoschoolat8o’clockeveryday.7:0010:0016:0018:00in:表示表示周、月、季节、年大于一天的时间用in用于week,month,season,year,十二个month分别是?January,February,March,April,May,June,July,August,September,October,November,December.四个season是?Spring,summer,fall(autumn),winter.练一练TranslateChineseintoEnglish1.晚上我要去拜访我阿姨。Intheevening,I’mgoingtovisitmyaunt.2.在秋天,农民伯伯可以摘苹果。Inautumnfarmerscanpickapples.3.你什么时候生日?我的生日在2月。Whenisyourbirthday?MybirthdayisinFebruary.4.星期一,我没吃早饭。OnMonday,Ididnoteatbreakfast.InMonday,Ididnoteatbreakfast.√on:表示在具体某一天或某一天的早上,下午,晚上。1.在假期里你都做了些什么?Whatdidyoudoonyourholiday?2.我们2月1日离开北京,2日达到哈尔滨。WeleftBeijingonFebruary1standgottoHarbinonthe2nd.3.星期一晚上,我们去了超市。OnMondayevening,wewenttothesupermarket.1.atnight在晚上2.intheday在白天3.inthemorning在早上4.intheafternoon在下午59.intheevening在晚上在早上/下午/傍晚用inafterbeforeforfrom……to1.before/after表示在某个时间段前/后。Letusgoforawalkdinner.Letuswashhandslunch.2.for加一段时间笔直走大约5分钟。Gostraightforaboutfiveminutes.3.from表示从某时间开始。to表示在某时间结束。春天从3月开始到5月结束。SpringisfromMarchtoMay.afterbefore方式介词:by,with,inby+交通工具(transportation)你知道那些交通工具?InEnglishbike,motorbike,train,car,plane,taxi,cab,underground,subway,bus,boat,ship.表达方法:goto+地方+by+交通工具Onfoot=walk吴一凡和他的朋友一起踢足球。WuYifanplaysfootballwithhisfriends.with+人=和……在一起用刀切。Cutwiththeknife.with+物=用某种工具或方法play+with+物=玩什么playwithcomputerplaywithsnow在下列情况下,时间状语前不用介词:•1.当时间状语是today,tonight,yesterday,thedaybeforeyesterday,yesterdaymorning/afternoon/evening,tomorrow,tomorrowmorning/afternoon/evening等时。•Shewenttotheparkyesterday.•I’llbefreetomorrowmorning.•2.含有this,that,these,those,last,next,every,each等的时间状语不用介词。•Wearegoingtoplaybasketballthisafternoon.•IsawhiminthestreetlastSunday.•Mymothergetsupearlyeverymorning.•Weareworkingonthefarmthesedays.