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1、Grammar and usage,Present Perfect Tense 现在完成时 & Present Perfect Continuous Tense 现在完成进行时,Part A,Present perfect tense,Form: have / has + done,Present perfect tense,The boy is very happy. The boy _ (catch)a bird.,Connection with the past: The boy caught a bird.,Connection with the present: The boy is
2、 happy.,Present perfect tense,The boy is very happy. The boy _ (catch)a bird.,has caught,Connection with the past: The boy caught a bird.,Connection with the present: The boy is happy.,Present perfect tense,Look, the window is open. Eric opened the window just now.,Eric _ _(already open) the window.
3、,Connection with the past: Eric opened the window.,has already,opened,Connection with the present: The window is open.,Summary ,We use the present perfect tense to talk about things that happened in the recent past, but are connected to the present.,Present perfect tense,Daniel _(live)in Beijing sin
4、ce he came to China.,has lived,Connection with the past: Daniel came to China.,Connection with the present: Daniel is living in China.,Summary ,past,now,future,came,has lived,We use the present perfect tense to talk about something that started in the past, and is still happening now.组卷网,Present per
5、fect tense,The boys are tired. They _ (just play)a ball game.组卷网,have just played,Connection with the present: The boys are tired.,Connection with the past: The boys played a ball game.,Summary ,We use the present perfect tense to talk about actions that were completed only a short time ago.,Present
6、 perfect tense,I went to Egypt in 1986.,I _ (be) to Egypt twice.,I went to Egypt in 2004.,have been,Summary ,We can also use the present perfect tense for repeated actions.,Present perfect tense,_ it ever _(snow)in Hong Kong?,Has,snowed,No, it _ never _ (snow) there.,has,snowed,Summary ,We use the p
7、resent perfect tense when the exact time of an action is not clear or important. We use it with time expressions such as: already, ever, for, just, lately, never, recently, since, yet.,Notes:,1.We use already for affirmative statements and yet for negative statements and interrogative sentences.,2.
8、We use for + a period of time and since + a point of time.,Notes:,3. Structures connected with the present perfect tense:,It is(has been)+ a period of time + since- clause.,This(That/It)is the first(second)time + that-clause (present perfect tense).,This (That/It) is the only + that-clause (present
9、perfect tense).,This(That/It)is the best / finest / most interesting + that-clause.,Exercise,My friend Jack has just sent me an e-mail, telling me about his travels around the world. He _(just be)to Qomolangma Base Camp and _ (see) a Yeti there. He is still very excited about it. He _ (visit) the Gr
10、eat Pyramid in Egypt too. He says that he _(love) Egypt but he _ (not visit)all the pyramids yet.,has just been,saw,has visited,loves,hasnt visited,Exercise,He _ (swim) in Loch Ness, but luckily he _ (never meet)the Loch Ness Monster! He _(dive) in the Indian Ocean many times looking for treasure. A
11、lthough he _(find) many sunken ships, he _ (not find)any treasure._(11)he _ (be)to the Great Wall before? Im not sure but I have!,has swum,has never met,has dived,has found,hasnt found,Has,been,Part B,Present Perfect Continuous Tense,Form: have / has + been + doing,The boy started having dinner five
12、 minutes ago. He is still having dinner now.,The boy _ (have)dinner since five minutes ago.,has been having,Present perfect continuous tense,The man started working in the field half an hour ago. He is still working now.,The man _ (work)in the field for half an hour.,has been working,Present perfect
13、 continuous tense,Summary ,past,present,I returned home.,Im still not sleeping well.,not being able to sleep well,I have not been sleeping well since I returned home.,1. We use the present perfect continuous tense to talk about actions that started in the past and are still continuing.,Summary ,We a
14、lso use the present perfect continuous tense to talk about actions that have just finished but are still connected to the present in some way.,Summary ,past,present,Mavis started waiting for Kelly.,one hour ago,Kelly arrives.,Kelly: Sorry Im late. Have you been waiting long? Mavis: Yes. Ive been wai
15、ting for an hour.,1. We use the present perfect tense to talk about an action completed in the recent past, and the present perfect continuous tense for an action that started in the past and is still happening.,Comparison,Comparison,past & past,now,future,past,PPT:,have done,past & past,now,future,past,PPCT:,have been doing,Comparison,Li Jia _ (read)a book about S
