1、1.Present Perfect Tense,2.Present Perfect Continuous Tense,M2U1 Grammar & usage,、现在完成时 1.现在完成时的构成 2.现在完成时的用法、现在完成进行时 1.现在完成进行时的构成 2.现在完成进行时的用法、现在完成时和现在完成进行时的比较,现在完成时和现在完成进行时的基本用法,1.现在完成时的构成：主动式:have/has done被动式:have/has been done,1.现在完成时,We _(already open) the window. 过去的动作: we opened the window. 对现
2、在的影响: The window is open.,have already opened,2.现在完成时的用法,The boys are tired. They _ (just play) a ball game.过去的动作 : The boys played a ball game.对现在的影响: The boys are tired.,have just played,现在完成时表示过去发生或已完成的动作，或某一动作对现在造成的影响或结果。通常与表示包括现在在内的时间副词just, already, before, yet, never, ever, lately, recently等状
3、语连用。,小结：现在完成时用法1-已完成、影响性用法,already:用于肯定句;yet:用于否定和疑问句,Daniel _ (live) in Beijing since he came to China.,has lived,came,现在完成时表示过去已经开始，持续到现在,也许还会持续下去的动作或状态。可以和表示从过去某一时刻延续到现在（包括现在在内）的一段时间的状语连用。如： for和since， so far, up to now, today, until/till, this week (month, year) during /over /in the past few yea
4、rs (weeks, months),现在完成时用法2-未完成用法,小结：,Fill in the blanks:. a. She has learnt English 3 years.b. She has learnt English 3 years ago.c. They have lived here _1990.,for,since,since, I (see) her so far. What _ (happen) to the USA in the past 35 years?,havent seen,has happened,Since 的补充用法A.主句+since+从句Gre
5、at changes have taken place since you left.B. It is +时间段+ since+从句It is / has been two years since I left my hometown.b. It was /had been two years since I had left my hometown.c. It is years since I smoked .d. It is years since I began to smoke .,I went to Egypt in 1986. I went to Egypt in 2004. I
6、_ (be) to Egypt twice.,have been,现在完成时可过去发生过一次或多次的情况，也可以说是一种经历。,现在完成时用法3-经验性用法,I （not see） anything so beautiful in my life.,havent seen,小结：,( ) 1. He has come here. ( ) 2. He has come here for 3 days. ( ) 3. He hasnt come here for 3 days. ( ) 4. He has stayed here for 3 days. ( ) 5. He has been awa
7、y for 3 days.,现在完成时知识扩展一,与现在完成时有关的句型:1)This (That/It) is the first (second) time + that-clause This is the first time that I _ (see) pandas2 )This (That/It) is the only time + that-clause It is the only time that I_ (travel )abroad.3)This (That/It) is the best/ finest /most interesting + that-clause
8、. It is the most delicious food that I _(taste),have seen,have traveled,have tasted,现在完成时知识扩展二,Present Perfect Continuous Tense,Unit 1 Grammar & usage,The boy started having dinner five minutes ago. He is still having dinner now. The boy _ (have) dinner since five minutes ago.,has been having,1.现在完成
9、进行时,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,现在完成进行时的构成：have/has been doing,现在完成进行时用法1现在完成进行时表示过去的动作持续到现在并有可能持续下去.,CCTV has been broadcasting English programs since 1984.,broadcasted,broadcast,broa
10、dcast,小结：,现在完成进行时用法2:现在完成进行时表示过去的动作持续到说话时刚结束。,Mavis started waiting .,Kelly arrives.,Kelly: Sorry Im late. Have you been waiting long?Mavis: Yes. Ive been waiting for an hour.,wait,小结：,3.现在完成时和现在完成进行时的比较,Tom _ (read) a book about Stonehenge. (She finished reading the book.)Tom _ (read) a book about
11、Stonehenge. (She is still reading the book.),has read,has been reading,比较一：,did,did,1.,2.,I _(travel) to Beijing three times.I _(travel) in Beijing for 3 days.,have travelled,比较二：,have been travelling,_have you been swimming in the lake?_have you swum in the lake?,A. How long,B. How many times,比较三：,
12、A,B,1.She has had the pen for 2 years.2.She has written many compositions withthis pen.3.She has been writing compositions with this pen.,state verb,action verb,action verb,比较四：,( ) 1.I have never visited America. ( ) 2.I have already been to America ( ) 3.I have never been visiting America,比较五：,比较六：,Who has been eating my apples?Who has eaten my apples?,（带有感情色彩）,（不带有感情色彩，只是陈述某事情）,
