Grammar,The present perfect,By Ms Yuan.,Travelling is fun for me.,I have been to,the Forbidden City,the Great wall,I have visited,the Temple of Heaven,the Summer Palace,Tiananmen Square,I have stayed in Beijing for 2 weeks.,I have been to the Great wall and the Forbidden City. I have visited the Summer Palace and the Temple of Heaven. I have stayed in Beijing for 2 weeks.,The present perfect,Read and learn,Ive learnt to use chopsticks. Its been a fantastic experience so far. Ive learnt a bit of tai chi. Weve already learnt a lot about Chinese culture and history. The teachers have introduced us to Chinese painting as well. Weve also tried to paint some pictures ourselves. I havent had much success yet. Ive made many new friends.,learn- learnt/learned- learnt/ learned,be- was/were- been,introduce - introduced,try- tried,have / has - had- had,make - made- made,I _ _ to use chopsticks, and theyre teaching me a little Chinese. 2. It _ _ a fantastic experience so far. 3. We_ _ _ a lot about Chinese culture and history. 4. The teachers _ _ us to Chinese painting as well. 5. We_ _ _ to paint some pictures ourselves. 6. I _ _ much success yet, but Ill keep trying. 7. I _ _ many new friends.,ve learnt,s been,ve already learnt,have introduced,ve also tried,havent had,ve made,go,Ready?,To Compare,She did homework yesterday. (she doesnt need to do her homework now.) She has already done her homework.,do/ does - did- done,She had her breakfast just now.她刚才吃了早饭。 (She is not hungry now.她现在不饿。) She has just had her breakfast.她刚吃过早饭。,To Compare,have/ has - had- had,To Compare,The elephant helped me a lot a moment ago. ( I can drive my car now.) The elephant has just helped me a lot.,help- helped,I didnt sing an English song in the singing competition last week. （I still remember the thing now.） I havent sung an English song in the singing competition yet.,To Compare,sing- sang- sung,We began to study here last year. (We still study here now.) We have studied here for more than one year.,study- studied,He began to be interested in playing computer games when he was born. (He is still interested in it now.) He has been interested in playing computer games since he was born.,be- was/were- been,1.She has already done her homework. 2.She has just had her breakfast. 3.The elephant has just helped me a lot. 4. I havent sung an English song in the singing competition yet. 定义一：过去完成的动作对现在造成的影响或结果。 5. We have studied here for more than one year. 6. He has been interested in playing computer games since he was born. 定义二：过去开始的动作一直持续到现在或有可能继续下去。 现在完成时态的结构：,already(已经) 肯中 yet(已经) 问否尾 just(刚刚)肯中 ever(曾经)问中 never（从不）,常与for, since引导的时间短语或从句连用.,for+ 时间段 since+过去时间 since+过去句子,肯定 have / has +done 否定 have / has not + done,Past,Now,Future,完成,影响,already(已经) 肯中 yet(还) 问否尾 just(刚刚)肯中 ever(曾经)问中 never（从不）,开始,持续至今,持续到将来,for+ 时间段 since+过去时间 since+过去句子,定义一：过去完成的动作对现在造成的影响或结果。,定义二：过去开始的动作一直持续到现在或有可能继续下去。,have met,have played,has cooked,have studied,have seen,havent visited,havent done,用法小窍门：描述过去的动作，若句中有yesterday , last week, three days ago, in 1996等过去时间就一定用一般过去时。若 没有常用现在完成时。所以When问句不能用现在完成时。 A：Have you finished your homework yet? B: Yes, I have. A: When did you finish it? B: Yesterday evening.,Further Understanding 代言词,Lets read them!,I have seen Avatar.,She has already written 3 books .,I havent seen the movie yet .,Have you ever seen a sign like this ?,I have never seen a kangaroo.,How long have you studied in Huangguang Middle School Guangzhou Branch?,肯定句,否定句,一般疑问句,特殊疑问句,现在完成时的代言词： 1. already（已经）/just（刚刚）：用于肯定句中 2. yet（还）: 用于否定句和疑问句句尾 3. ever（曾经）：用于疑问和否定句中。 4. never（从不）: 表示否定,二、用never, ever, already, just, yet, for填空： 1. I have _ seen him before, so I have no idea about him. 2. Jack has _ finished his homework. 3. Mr. Wang has taught in this school _ ten years. 4. “Have you _ seen the film?” “No, I have _ seen it.” 5. “Has the bus left _?” “Yes, it has _ left.”,never,already/just,for,ever,never,yet,just/alreay,already(已经) 肯中 yet(已经) 问否尾 just(刚刚)肯中 ever(曾经)问中 never（从不）,for / since 的区别,1.for+时间段 for many years, for a long time 2.since+时间点 since 1998, since last year 3.since+时间段+ago since three years ago 4.since+句子(一般过去时） since I moved here.,My family have lived here for many years. I havent lived in my hometown since 2008. She has learnt English since five years ago. He has had the house since he moved here.,for+ 时间段 since+过去时间 since+过去句子,1)We have lived here _ 2001. 2) I have been a teacher _ ten months. 3) They have known each other _ more than five years. 4) I have been at this school _ six years ago. 5) She has sent some information to Tom _ Tom went to school. 6) I will stay in the hotel _ a week.,since,for,for,since,since,for,Fill in the sentences with for or since.,for+ 时间 ，since+过去时间，since+过去句子,Sentence Pattern 句式,I have eaten lunch.,She has eaten l