1、The Present Perfect Tense现在完成时现在完成时基本结构句型转换两大用法常考句型易考易错标志词1.VS 一般过去时2.非延续词 延续词 3.三大谜团ADD YOUR TITLEI have had my breakfast.Tom has finished his homework.The plane has arrived.We have joined the army.Have/has+过去分词（done）规则动词的过去式及过去分词变化规则 （1）一般动词，在词尾直接加 edwork-worked-worked;visit-visited-visited(2)以e结尾
2、的动词，只在词尾加dlive-lived-lived(3)以“辅音字母+y结尾的动词，将 y 变成 i,再加edstudy-studied-studied;cry-cried-cried.(4)重读闭音节结尾，末尾只有一个辅音字母，先双写改辅音字母，再加edstop-stopped-stopped;chat-chatted-chatted.不规则动词的过去式及过去分词变化规则AAAput-put-put;let-let-let;cost-cost-cost;hit-hit-hitABBstand-stood-stood;sit-sat-sat;get-got-got;say-said-said
3、ABAbecome-became-becomeABCeat-ate-eaten;wear-wore-wornAABbeat-beat-beatenPARTTWO句 型转 换ADD YOUR TITLEHave/has+过去分词(done)否定句否定句疑问句疑问句have not(havent)+过去分词（done）Has not(hasnt)+过去分词（done)Have+主语+过去分词（done）+?Has+主语+过去分词（done）+?-Yes,相应主语+have/has.-No,相应主语+havent/hasnt.ADD YOUR TITLEI have had my breakfast
4、.否定句：I have not(havent)had my breakfast.疑问句：Have you had your breakfast?Tom has finished his homework.否定句：Tom has not(hasnt)finished his homework.疑问句：Has Tom finished his homework?PARTTHREE两 大 用 法ADD YOUR TITLE表示动作发生在过去，但对现在有影响1.影响性用法过去现在有影响例：我已经看过这个电影了。I have seen the film.ADD YOUR TITLE表示动作从过去延续到现
5、在，并有可能延续持续下去2.持续性用法过去现在有延续例：我已经在勤思学了三个月的英语了。I have learned English in Qinsi cram school for 3 months.alreadyalready已经：用于已经：用于肯定句肯定句I have already posted the letter.yetyet已经：用于已经：用于否定句否定句和疑问句和疑问句He hasnt finished his homework yet.justjust刚刚刚刚They have just left,everever曾经曾经Have you ever been to Beiji
6、ng?nevernever从不；从未从不；从未I have never seen him.beforebefore以前以前Have you seen the film before?Since+Since+时间点时间点自自以来以来I have worked in the school since 1999.For+For+时间段时间段长达长达He has lived in Shenzhen for 6 years.in the past+in the past+时间段时间段在过去的在过去的China has changed a lot in the past 10 years.recently
7、recently最近最近I have not written to my parents recently.soso far far到目前为止到目前为止So far she has learned 5 English songs.upup to now to now=up to present=up to present=up till now=up till now到目前为止到目前为止Up to now,he has repaired hundreds of bikes.twice;three timestwice;three times次数次数I have been to the US t
8、hree times.PARTFOUR易 错 易 考ADD YOUR TITLE1.现在完成时 VS 一般过去式Wang Yuan went to Jinan yesterday.Wang Yuan has gone to Jinan.ADD YOUR TITLE1.现在完成时 VS 一般过去式a alreadylready yetyet justjuste everver nevernever beforebefores since ince+时间时间点点 For For+时间时间段段in the past+in the past+时间时间段段r recentlyecently so far
9、so farup to up to now=up now=up to to present=up present=up till till nownowy yesterdayesterdaylast last+(week,year,month)+(week,year,month)agoagoj just ust nownowi in n the pastthe pasti in n 1990.1990.ADD YOUR TITLE2.与since,for,how long.?连用时，非延续性动词要转换为延续性动词。I have brought the book for 5 years.I ha
10、ve had the book for 5 years.非延续性动词非延续性动词延续性动词延续性动词buybuyhavehaveborrowborrowkeepkeepput on put on wearwearcatch a coldcatch a coldhave a coldhave a coldbecomebecomebebe 非延续性动词非延续性动词延续性动词延续性动词start/beginstart/beginbebe on on end/finishend/finishbebe over overleaveleavebebe away(from)away(from)arrive/
11、comearrive/comebebe in/at in/atjoinjoinbe inbe indiediebe deadbe deadmarrymarrybe marriedbe marriedgo to schoolgo to schoolbe in schoolbe in schoolADD YOUR TITLE3.三大谜团 Have been to:Have been to:Have been in:Have been in:Have gone to:Have gone to:去去过某地，过某地，现在已经回来了现在已经回来了呆呆了多久；了多久；在某地已经住了多久在某地已经住了多久去去
12、了了某地，某地，现在还没有回来现在还没有回来 I have been to the US twice.I cant see her because she has gone to Japan.I have been in the city for about ten years.PARTFive常 考 句 型ADD YOUR TITLE1.It is/has been+一段时间+since 自从起，已经有多久了他离开我已经10年了。It is/has been ten years since he left me.我搬到济南已经8年了It is/has been 8 years since I
13、 moved to Jinan.ADD YOUR TITLE2.This is the+最高级+n.+that+现在完成时 这是最 这是我见过最美丽的姑娘。This is the most beautiful girl that I have ever seen.这是我读过的最有趣的书This is the most interesting book that I have ever read.ADD YOUR TITLE3.It is the first(second/fourth)time that+现在完成时 这是第次这是我第一次参观这个城市。It is the first time t
14、hat I have visited the city.这是我第七次看这个电影。It is the seventh time that I have seen the film.现在完成时基本结构：have/has+过去分词（done）句型转换：havent/hasnt+doneHave/Has+主语+done?两大用法：影响性用法+持续性用法标志词：already;yet;for+时间段；since+时间点；just;before;never;ever 易考易错：现在完成时 VS 一般过去式（含义和标志词等不同）非延续性动词延续性动词have been to;have gone to;have been in.常考句型：1.It is/has been+一段时间+since2.This is the+最高级+n.+that+现在完成时3.It is the first(second/fourth)time that+现在完成时 THANKYOU
