八年级英语下 现在完成时1 (ppt).ppt

welcometoourclass 现在完成时态 语法练习课 时态 不同时间发生的动作 动词要用不同形式 已学习过的时态 1 v原形2 v三单 am is are v ing 1 will shall v原形2 am is aregoingto v原形 1 v ed 规则动词 2 不规则动词 was were v ing 判断下列句子的时态 1 sheworksinafactory 2 iwasdoingmyhomeworkatthistimeyesterday 3 wearegoingtohaveapicnicthissunday 4 theyheldasportsmeetinglastweek 5 areyouhelpingyourmother 一般现在时 过去进行时 一般将来时 一般过去时 现在进行时 现在完成时 1 过去发生的动作对现在造成的影响或结果 2 过去已经开始 持续到现在的动作或状态 动词构成 have has v过去分词 hadbreakfast ihavejusthadmybreakfast 现在我不饿 i mnothungrynow movedherein2000 istilllivehere ihavelivedhereforthreeyears ihavelivedheresince2000 threeyearsago now 现在完成时动词构成 have has v过去分词 助动词 否定 haven thasn t 疑问 haveyou hashe 动词的过去分词形式 1 规则动词2 不规则动词 finish finished finishedlive lived livedcarry carried carriedstop stopped stopped eg go went gonesee saw seenforget forgot forgotten i finish homework ihaven tfinishedmyhomework haveyoufinishedyourhomework yes ihave no ihaven t ihavefinishedmyhomework 1 她成为一名护士已经三年了 2 我五年前就认识李雷了 3 那些相片我已经寄给他了 post 4 我来到这个学校后 他就一直教我 5 我刚丢了我的历史书 shehasbeenanurseforthreeyears ihaveknownlileisincefiveyearsago ihavealreadypostedthephotostohim hehastaughtmesinceicametotheschool ihavejustlostmyhistorybook 1 for 表示一段时间的短语 2 since 表示过去时间点的词语 3 since 表示过去时间的时间状语从句 eg ihavebeenateacher ayear hehasbeenatthisschool 1992 wehavelearned1 000englishwords wecametothisschool for since since b just already yet before ever never有此类副词时 常强调动作完成 不强调动作的持续 eg haveyou beentojapan ihave finishedmyhomework ihavefinishedmyhomework ihaven tfinishedmyhomework ever just already yet 1 现在完成时句中常见的时间a 表示从过去一直持续到现在 不能是具体过去时间 2 区分短暂性动词与持续性动词 表示短暂性 瞬间性 的动词在现在完成时的句中不能和一段时间连用 即for since短语或howlong问句 come arrivegooutleavebeginbuyborrowjoindiecatchacold beat in beout beaway from beon have keep beamemberof bedead haveacold 改错 howlonghaveyoubecomealeaguemember formorethanoneyear haveyouarrivedheresincelastnight yes you reright thedoghasdiedforamonth hehasgonetoshang