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1、现在完成时ThePresentPerfectTense直击中考考点考点一：现在完成时句型结构：考点二：have/hasbeento与have/hasgoneto和have/hasbeenin的区别考点三：常见的暗示词:考点四：already与yet的区别考点五：for与since的区别考点六：延续性动词和短暂性动词的转换考点七：现在完成时和一般过去时的区别考点八：Itis+时间段since+过去时考点一：现在完成时的构成形式havehas助动词过去分词+done主语+肯定主语+have/has+done否定主语+have/hasnot+done疑问Have
2、/Has+主语+done+其他Yes,主+have/has.No,主+haven’t/hasn’t.Ihavefinishedmyhomework.Ihavenotfinishedmyhomework.Haveyoufinishedyourhomework?Yes,Ihave./No,Ihaven’t.ShehasbeentoBeijing.Shehasn’tbeentoBeijing.HasshebeentoBeijing?Yes,shehas./No,shehasn’t.1.规则动词：与过去时变化相同。(1)一般+-edwork---worke
3、d---worked(2)以“e”结尾,+-d。live---lived---lived(3)“辅音字母+y”结尾，y变i,+-ed。cry---cried---cried(4)重读闭音节结尾(辅元辅)，双写后+-ed。drop---dropped--dropped2、不规则动词，见不规则表（p146-148）动词过去分词的变化规则写出下列动词的过去式和过去分词Work____________Live____________Stay____________Stop____________Clean____________Study____________w
4、orkedworkedlivedlivedstayedstayedstoppedstoppedcleanedcleanedstudiedstudied不规则动词(见一个记一个）AAA型costcostcost；cutcutcut；AAB型beatbeatbeatenABA型①runranrun；②comecamecome③becomebecamebecomeABB型buyboughtbought；buildbuiltbuiltABC型beginbeganbegun；choosechosechosen1.--Haveyouever__________Shan
5、ghai?--Yes.Ihavebeentheretwice.2.WhereisLucy?Shehas________thelab.3.Shehas__________thelabforanhour.beentogoneto考点二：have/hasbeento和have/hasgoneto和have/hasbeenin的区别Have/hasbeento曾经去过某地（已返回)Have/hasgoneto去了某地（没有回来）Have/hasbeenin去/来到(一直呆在那)+一段时间beenin考点三：常见的暗示词:already(已经，常用于肯定句，放在ha
6、ve/has后或句末)just(刚刚，常用于肯定句，放在have/has后)ever(曾经，多用于疑问句中，Have/Has+主语+ever+其他)never（从不，表示否定，放在have/has后面）yet(仍,还没,用于否定和疑问句句末)since(自从,后跟点时间),for(后跟一段时间))sofar(到目前为止)inthelast/pastfewdays(在过去的几天twice/fourtimes…（以动作发生的次数为标志）考点四：yet和already的区别already已经,常用于肯定句，放在have/has后yet仍,还(没),用于否定和疑问
7、句句末eg.(1）---Haveyoudoneyourhomework_____?---Yes,Ihave________finishedit.Aalready,yetByet,alreadyTheyhavealreadyfinishedit.theyfinishedit____?(一般疑问句）Yes,they____.No,they____.They____finishedit____.(变否定Haveyethavehaven’thaven’tyet考点五：for和since的区别1.for+一段时间since+时间点+时间段+ago+一般过去时态的句子
8、Ihavebeencollectingshells_____199
