现在完成时,一.含义：过去影响现在,含义解释： 过去的发生的动作 对现在造成的影响。 与过去时的区别： 一个只是强调过去的事情， 一个强调过去发生的动作 对现在造成影响。,结构：have/has+v.pp(done) 动词的过去分词,（一） have/has的用法 1.助动词，无意义 2.三单用has,其余用have （二）p.p的形式 规则变化 基本与过去式类似 不规则变化 单独记忆,主语+have/ has+ p.p,I watch TV everyday. I watched the concert of Yuquan and Yu Kewei last Friday. I have watched the concert of Yuquan and Yu Kewei.,He is eating the hamburger. He eats hamburger every day. He ate a big hamburger yesterday. He has just eaten a big hamburger.,He has eaten a big hamburger. 否定句： 一般疑问句： 特殊疑问句： (划线提问),He hasnt eaten Has he eaten,What has he eaten?,p.p的变化规则:,v V-ed pp call called called see saw seen get got gotten do did done give gave - given go went gone throw-threw - thrown,1.直接+ed: kill- 2.+d: tie- move- 3.双写+ed: stop- (drop fit plan pat rob rub hug rid) 4.变y为i +ed : study -,killed,tied,moved,stopped,studied,不规则变化,(A-B -A ) become- (AB-C) fly- - (A-B-B) buy- -,became,become,flew,flown,bought,bought,ABC型 i-a-u 类 swim swam swum 游泳 sink sank sunk 下沉 drink drank drunk 喝 begin began begun 开始 sing sang sung 唱 ring rang rung 铃响,动词还有哪些不规则变化？,say go,make,take think bring,say go make take think bring,said said went gone made made took taken thought thought brought brought,用法： 表示从过去持续到现在 的动作。 I have known Yao Ming since I was a child.,2) 表示动作或事件的完成， 并对现在造成影响。 I have just finished lunch. Has it struck seven yet? 3)表经验 I have visited New York twice. Have you ever eaten apples?,现在完成时的 标志词：,1. already just yet 到现在为止 动作或状态 已经、刚刚或还没发生 我已经见过他了。 I have already seen him.,迈克尔刚刚从法国回来。 Michael has just come back from France. 玛利亚还没找到工作。 Maria has not found a job yet.,相同点： already 与yet 都可以用在疑问句中，表示“已经”,already 与yet 区别,你已经通过英语考试了吗？ Have you passed your English exam yet?,她已经把你的信打好了吗？ Has she typed your letter already?,不同点： already 表示“已经”， 常用于肯定句中； yet表示“还，仍然”， 常用于否定句中。,他已经找到他的钱包了。 She has already found her purse. 玛利亚还没学过滑冰。 Maria hasnt learned to skate yet.,曾经或从未发生过。 -Have you ever killed a tiger? - Yes, I have./ No, I havent. She has never seen the tigers.,2. ever , never,到现在为止发生了若干次 则要用现在完成时 How many times have you killed tigers? 你杀老虎几次了？,3. 以动作发生的次数为标志,到目前为止动作或状态已经发生 到目前为止他已经通过考试了。 She has passed the exam so far.,4.so far, up till now, up to now,Have you had supper yet?,Im full. I have already had supper .,仍然; 还,Im hungry. I havent had supper yet.,Have you cleaned your room yet?,I have already cleaned it . Its clean.,Have you cleaned your room yet?,Its very dirty. I havent cleaned it yet.,A: Have you _ been to France? B: No, Ive _ been to any European countries. But Michael has _ come back from France. He likes it very much. He says he has _ been to such a beautiful country before. A: Have you seen him _? B: Yes, I have seen him _.,ever,never,just already yet ever never,just,never,yet,already,( ) 1.-Have you returned the library book _ ? -Yes , Ive _returned it . A already , already B yet , yet C yet , just D just , already,C,( ) 2. -I have _told him . Has he called you _? -No , He hasnt called me _. A already, already , yet B just , already , yet C already , yet , yet D already , yet , already,C,( ) 3. -Have you seen the film _? -Yes . I saw it three years _. A ago , before B before , ago C ago , ago D before , before ( )4. -What are you going to do this weekend ? - I _ yet . A havent decided B wont decide C have decided D didnt decide,B,A,练一练,( ) 5. -_ you _ to hospital yet ? -Yes , I have . A Have , been B Has , been C Have , gone D Has , gone,A,练一练,重点： Did you ever see such a beautiful sunset? Have you ever seen such a beautiful sunset?,Do you know ?,find found found 找到,发现 fine fined fined 罚款 found founded founded 建立 lie lied lied 说谎 lie lay lain 躺，位于 lay laid laid 下蛋,see saw seen 看见 saw sawed sawed 锯 hang hung hung 悬挂 hang hanged hanged 上吊 shine shone shone 闪耀 shine shined shined 擦亮,bind bound bound 绑 bound bounded bounded 跳跃 wind wound wound 吹,转动,摇 wound wounded wounded 伤害,1.记忆动词的规则和 不规则变化。 2.用现在完成时造三个句子,homework,