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ID:55621677
大小:4.97 MB
页数:44页
时间:2020-05-20
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1、GrammarandUsageThebluebutterflyflewaway.Theredbutterflyisflyingaway.一般过去时:强调过去发生的动作现在进行时:强调正在进行的动作pastfuturenowIhaveflownforfiveminutes.fiveminutesPresentPerfectTense现在完成时现在完成时现在完成时用来表示之前已发生或完成的动作或状态,其结果的确和现在有联系。动作或状态发生在过去但它的影响现在还存在;也可表示持续到现在的动作或状态。其构成:have(
2、has)+过去分词e.g.Johnhasbrokenhisleftleg.用法常用状语have(has)done1.从过去开始的动作,一直持续到现在2.表示曾经做过某事或已经做过某事,对现在造成的影响和结果1.for,since2.already,yet,never,ever,just现在完成时构成MadamQiuhasworkedinthisschoolformorethanthirtyyears.MissLaiandIhavestayedheresinceOctober.…formorethanthirty
3、years…sinceOctoberfor后接的是时间段。since后接时间点,而且是过去时间。e.g.Tomhaslivedhereforalongtime.Ihaveknownallofyousincelastmonth.Fillintheblanks:(for&since)1.ShehaslearntEnglish______threeyears.2.ShehaslearntEnglish______threeyearsago.forsincethreeyearagofuturenowthreeyears
4、3.Theyhavelivedhere______1990.4.Theyhavelivedhere______21years.sincefor1990futurenow21yearsIhavejusthadmybreakfast.影响:现在我不饿。havebreakfastI’mnothungrynowIhaveseenthisfilm.seethefilmIknowthecontent.影响:现在电影的内容我已经知道了。1.yet&already二者常用于完成时态中。yet意为“仍然还未”,常用在否定句或疑问
5、句中;already意为“已经”,常用于肯定句中。词语辨析例题(yet&already)1.Tomhas_______left.2.Ihaven’treadtoday’snewspaper_____.alreadyyet1.Mum’scookedthedinner.Mum_____________thedinner.2.KidshavelearnedEnglishatschool.Kids________________________Englishatschool.3.I’vealreadyhaddinner
6、.I___________dinner____.4.Hehasjustfinishedhishomework.He_____________hishomework___.haven’thadyethasn’tfinishedyethasn’tcookedhaven’tlearned把下列句子改为否定句2.everadv.ever意为“曾经”,与现在完成时连用.HaveyoueverbeentoLondon?ever的反义词是never,意为“从不;从未”。Maryhasneverboughtanybooks.☆
7、havebeento:去过某地(但已经回来,人不在某地)☆havegoneto:去某地了(说话时某人在去某地的途中或已在某地)句中如果用ever,never,once(一次),twice(两次),threetimes(三次)等时间状语时,用havebeentohavegoneto&havebeentoHehasgonetoParis.(他现在在巴黎)HehasbeentoParis.(他去过巴黎已经回来了)1.I____never____toChina.have_____beenhave_____gone2.-
8、-”Where’smother?Sheisn’there.”--”She________tothesupermarket.”hasgonehasbeensince+过去时for+时间段recentlylatelythesedaysthisweekinthepastfewdayssofaruptonowuntilnow现在完成时的标志1.Sofarthisyearwe___afallin
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