Unit3Grammar现在完成时态present(now)futurepast现在完成时(presentperfecttense)domyhomework现在完成时的构成主菜单上一页下一页助动词have(has)+:John,:Mum,Ihavealready(已经)byourhair------beditwashyourhands-----havewashedthemstudyforEnglishtest-----havestudiedforittellmethetruth-----havetoldyoueverythingvisityourgrandpa-----havevisitedhimlistentotheEnglishtape-----havelistenedtoitMother:John,:Mum,:Tellyoursistertobuysomemilk,:Oh,shehasjust(刚刚):Tellyoursistertobuysomemilk,:Oh,----hascarriedsomeboilsomewater----hasboiledsomemakesomecoffee--------hascalledhimmendtheshirt----hasmendeditdryherhair----:have/has+done(过去分词)过去分词(pp)其变化方法和动词过去式基本相同。有部分不同,需要记好。?Yes,hehas./No,hehasn’:用法:1)现在完成时表示过去发生的动作,并对现在有影响。Someonehasbrokenthewindow.(窗户现在是坏的)Ihavealreadylostthekey.(我现在没有钥匙)Ihaven’treadthatbookyet.(不了解书的内容)Ihavejustcleanedmyhands.(手是干净的)常与already(已经),yet(已经),just(刚刚),ever(曾经)::常用于否定句,疑问句尾.
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