Put the verbs into two groups. A. Verbs to describe events that can continue over a period of time.
B. Verbs to describe events that happen at a particular point in time. borrow buy give stay leave open live put know send die remain
2. 一般过去时和时间段连用，只指过去的动作或状态 在过去延续了多长时间，与现在无关。 现在完成时与时间段连用，表从过去lish for four I __________ years.(study) I began to study it 4 years ago. And it lasts until now.
Complete these sentences. Use either the past simple tense or the present perfect tense.
build buy come get live see stay visit
have built 1.They ____________ many high-rise buildings in the city. has got much worse recently. 2.The traffic in the city _______ came in the summer, they 3.When the tourists ______ stayed the city centre. ______in 4.Xiamen is one of the most attractive cities John has visited __________. has lived in Xiamen all his life. 5.Xiao Li _________ hasn’t bought (not) any presents yet but he 6.John ____________ has seen _________a shopping mall, where they will go tomorrow.
Past tense time expressions: yesterday, last night, (week, month, year…) a few days ago, five years ago, …ago, in 1974, in the 1920s the other day, in the past
ever since
all one’s life
in the last ten years in (during) the past three years
recently ,just， lately
用动词完成对话，在必要的地方填 for 或 since. Mike: Hi, Kate. Kate: Hi, Mike. for a long time. haven’t seen (not see ) your brother ____ Mike: I ____________ Has he _______ moved (move) to a new neighbourhood? ______ has moved Kate: No, he _____ ______ (move ) to a new country! He has been since last year. ______ _______ (be) in Australia _______ Mike: Australia! That’s a great country. ______ Have you ever _______ been (be ) there? have never _______ Kate: No, I ______ been (be ) there, but I ______ have decided (decide ) to go later this year. ________ Has your brother ________ sent Mike: Great! ______ (send ) you any since he moved there? photos ________ have just ________ received (receive ) some. Kate: Yes, in fact, I _______ Here they are. This is his new house. He _______ has finished (finish ) decorating it. recently ________
Conclusion:
for
+ 段时间
for three years
since
+点时间 /句子
since 1990 / three years ago since I came here.
1 根据中文意思，选择合适的英文句子
1 A. B. C.
2 A. B. C. 3 A. B. C.
他参加这个俱乐部已两年了。 He has joined the club for two years. He has been a number of the club for two years. He joined the club for two years.
studied I _________ English for four years when I was at college.(study) Maybe I am not studying it now.
3. 一般过去时常和表示过去某时刻的时间状语连用， 且这个时间与现在相隔离。 现在完成时所带的时间状语包含说话时在内或与说话 时非常接近。 come did 3) --- When ______you_______? (come)
4 Lucy 来这儿五天了。 A. Lucy has come here for five days. B. Lucy has been here for five days. C. Lucy has arrived here for five days.
5 他买电脑已有一年了。 A. He bought his computer for a year. B. He has bought his computer for a year. C. He has had his computer for a year.
我去过海南两次。 I have been to Hainan twice. I went to Hainan twice. I have gone to Hainan twice. 他们是好朋友已有三年了。 They have made friends for three years. They made friends for three years. They have been good friends for three years.
在肯定句中，这些非延续性的动词的现在完 成时不能和表示一段时间的状语连用。
die--- be dead join--- be in
buy--- have
borrow--- keep end--- be over

Revision:
Look at these sentences using the present perfect tense. Look at the phrases in bold. 1. It’s been very successful, so far. 2. Up to now, I’ve understood everything the teacher’s said. 3. We’ve had very good weather this winter, till now. Can you give me more sentences with the Present Perfect Tense?
Can you give me more verbs to describe events that happen at a particular point in time "?
come, fall asleep, join, go, arrive, marry, begin, start, get, end, borrow, buy, give, leave, open, put, send, die, fall ill...
Why ?
I have already had my lunch. I had my lunch and now I am full. I have lost my dictionary. I lost my dictionary and I don’t have it now I’ve been to Beijng twice. So it leaves me a deep impression.(ever, never twice,many times) I have studied English for 3 years.
1. 动作发生在过去对现在的影响或结果。
2. 过去积累到现在的经验或经历。 3. 过去的动作和状态一直延续到现在。
一般过去时和现在完成时
1. 一般过去时表示具体的过去发生的动作，和现在时 间无关, 纯属过去。 现在完成时强调过去发生的动作或事件对现在的影响和 联系。
Has the plane_______?(arrive) arrived 1). ---________ --- Yes. did it _________? arrive --- When ______ --- Half an hour ago. 2)--- Would you like to have lunch here? --- No. Thanks. I have ________ had lunch already. I had it in the school canteen. (have) ____