现在完成时九年级英语课件
日期:2010-12-01 12:31
before,(“洗衣服”是发生在过去的动作,**现在完成时**现在完成时是由助动词have(has)+过去分词构成其否定句在Have/has后加not一般疑问句把have/has提到主语前动词的过去分词:规则变化(和过去时一样)不规则变化:不规则变化:am/is-was-beenare-were-beenbegin-began-begunbreak-broke-brokendo-did-donedraw-drew-drawndrink-drank-drunkdrive-drove-driveneat-ate-eatenfall-fell-fallenfly-flew-flownforget-forgot-forgottengive-gave-givengo-went-gonegrow-grew-grownhide-hid-hiddenknow-knew-knownlie-lay-lainride-rode-riddenring-rang-rungshow-showed-shownsee-saw-seensing-sang-sungspeak-spoke-spokentake-took-takencome-came-comerun-ran–runbecome-became-become1,already(已经),表过去发生的某一动作对现在造成的影响或结果,yet(一般疑问:已经;否定句:还)never,对现在造成的结果是“衣服干净了”)Ihavejusthadmybreakfast(对现在的影响:不饿)通常与表示包括现在在内的时间副词just(刚刚),例如Ihavejustcleanedmyclothes我刚洗过衣服,ever等状语连用①Ihaveneverheardofthatbefore②Haveyoueverriddenahorse?③Shehasalreadyfinishedthework④Haveyoumilkedthecowyet?,
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