1、现在完成时讲解及练习授课内容 现在完成时使用情况过去分词不规则变化现在完成时句子结构123演练与实践41111 1肯定句：主语+have/has+过去分词(done)例句：我的猫咪已经很喜欢我了。My cat has lost its heart to me a lot.1111 1否定句：主语+have/has not+过去分词(done)例句：我妈已经三天没有打我啦。My mother has not hit me for three days.1111 1一般疑问句：have/has+主语+done+其他例句：我的猫咪已经很喜欢我了吗？Has my cat lost its heart
2、to me a lot?1111 1特殊疑问句：特殊疑问词+一般疑问句（删去被省略部分）例句：我的猫咪已经很喜欢谁？Who has my cat lost its heart to a lot?111111alreadynevereverjustyetup to nowso farfor+时间段时间段since+时间点时间点these daysfor a long time1111121.过去发生的某一动作对现在造成的影响或结果例句1：一起吃饭吗？-不，谢谢，我已经吃过了。Dinner together?.No,thank you.I have already had dinner.例句2：一
3、起出去玩吗？我刚把汽车给修好了。I have just repaired my car.1111122.过去已经开始,持续到现在的动作或状态例句1：我已经三天没有吃饱饭了。I havent had enough for three days.I havent had enough since 3 days ago.例句2：我已经上了十年的学了。I have studied for 10 years.I have studied since 10 years ago/since 2012.1111123.表示人目前为止从未有过的经历例句：我从未在课堂上玩过手机。I have never play
4、ed my phone in the class.4.表示曾经去过某地/去了没回来例句1：我曾经去过香港。例句2：我去了香港（还没回来）。I have been to Hongkong before.I have gone to Hongkong.1111125.表示第几次做某事固定搭配：it is the first/second time that sb has done sth例句1：这是这位总统第一次访问中国。This is the first time that this president has visited China.例句2：这是我第三次考了如此好的分数。It is the
5、 second time that I have acquired such good grades.1111125.固定搭配：it is the 最高级/only+n.+完成时例句1：这是我做过的最简单的一张试卷。It is the easiest exam paper I have ever done.例句2：这是历史上唯一一次一个人获得两个诺贝尔奖。It is the only time that one person has acquired two Nobel Prizes.1111 21.过去发生的某一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3.表示人目前
6、为止从未有过的经历4.表示曾经去过某地/去了没回来5.固定搭配 1111 3类型例子AAA型（三种都一样）cost cost cost；cut cut cut；hurt hurt hurt；shut shut shutABB型(过去式与过去分词相同)bring-brought-brought;catch caught caught ABC型(三种都不一样)begin-began-begun；grow grew grown；ring rang rung ABA型(原形与过去分词相同)come-came-come；become became become 4一、写出下列动词的过去分词形式1.wak
7、e _ 2.teach _ 3.sell _4.see _ 5.ride _ 6.pay _7.choose _ 8.throw _ 9.think _10.eat _ 11.drive _ 12.catch _13.bring _ 14.break _15.give _16.get _17.know _ 18.open _19.write _ 20.forget _Woken taughtSold seenRidden paid Chosen thrownThought eaten Driven caught Brought brokenGiven gotten Known openedWr
8、itten forgotten4二、用since和for填空1.Jim has been in Ireland _ Monday.2.Jill has been in Ireland _ three days.3.His aunt has lived in Australia _15 days.4.Mary is in her office.She has been there _ 7 oclock.5.India has been an independent country _1974.6.The bus is late.Theyve been waiting _ 20 minutes.7
9、.Nobody lives in those houses.They have been empty _ many years.8.Mike has been ill _a long time.He has been in hospital _ October.sinceforforsincesinceforforforsince4三、改写句子1.1.I have been to Macau before.(改为否定句)I _ _ been to Macau before.2.He hasnt come to school because he was ill.(就划线部分提问)_ _ he
10、come to school？3.I bough a new bike just now.(用just改写)I _ just _ a new bike.4.We began to learn English three years ago.(改为同义句)We _ _English _three yearshave notWhy hasnt have boughthave learnt for14But finally,the loss of forests may have an effect on the climate of our planet.(2016年英译中)但最后，森林的消失可能会对我们地球的气候产生影响。四、中英互译4I have not seen John for years,_（他的父母也没有收到他的音讯）nor:倒装句结构（前句）否定句（后句）norneither肯定式动词主语nor have his parents heard from him4_（不管你出了多少错）,you are still ahead of those whowont try.No matter how many mistakes you have madeThanks!
