Unit_4_Have_you_ever_been_to_an_amusement_park课件

1. I am a doctor. I began to work when I was 22.Now , I am 26. I have worked for four years. ________ 2. We went to the USA last Monday. Today is Monday . We _________ have stayed (stay) in the USA since last Monday.
the Present Perfect Tense
现在完成时
助动词have (has)+过去分词 过去分词done 助动词 过去分词
past
Yesterday , we cleaned the classroom.
now
Now , the classroom is clean because we have cleaned it.
since ______three o’clock ’ for
______two days since ______yesterday afternoon since ______I came here
since
______last Sunday
A 1.They’ve known each other since_______.
4.You are going to a restaurant this evening. You phone to reserve(预定）a table. 预定） 预定 Later your friend says ‘Shall I phone to reserve a table? ’You say: I have already done No,__________________ it (do)
past
I began to teach English at this school five years ago.
now
I have taught English at this school for five years.
用法2 用法2：
过去发生的动作一直延续到现在。 过去发生的动作一直延续到现在。 延续到现在
3. 现在完成时往往同表示不确定的过去时 间状语连用,如 间状语连用 如already, yet, just, before, recently, still, lately等: 等 He has already finished his work. I haven't seen him recently (lately). We have seen that film before. Have they found the missing child yet ？
3.You are eating in a restaurant this
evening. The waiter thinks you have finished and starts to take your plate away.You say: Wait a I haven’t finished it yet. ’ moment !_______________________ ( not / finish )
Yet:
“仍然，还 ” 用在疑问句和否定句 仍然， 中，放在句末。 放在句末。 I haven’t read this book yet . ’ Have you had breakfast yet ?
ever
曾经” “曾经”通常用于疑问句 和肯定句中,放在句中 放在句中。 和肯定句中 放在句中。 I have ever seen this film. Have you ever been to the USA ?
非延续性动词不能与时间段连用： 非延续性动词不能与时间段连用： go/come/begin/start/die/buy/borrow/sell/leave/arrive/ receive/become等词语是瞬间动词表示的动作是一时的， 等词语是瞬间动词表示的动作是一时的， 等词语是瞬间动词表示的动作是一时的 不能延续，不能与for、 等表示一段时间的词连用， 不能延续，不能与 、since等表示一段时间的词连用， 等表示一段时间的词连用 也不能用于how long引导的疑问句中。 引导的疑问句中。 也不能用于 引导的疑问句中 如不能说： 如不能说：He has borrowed the book for two months.(ⅹ) ⅹ 但可以说： 但可以说：He has kept the book for 2 months. 或：It has been 2 months since he borrowed the book. 或：Two months has passed since he borrowed the book.
I have lost my wallet. (含义是 现在我没有钱花了 含义是:现在我没有钱花了 含义是 现在我没有钱花了.) Jane has just had it. (含义是 简现在不饿了.) 含义是:简现在不饿了 含义是 简现在不饿了 Michael has been ill. (含义是 现在仍然很虚弱 含义是:现在仍然很虚弱 含义是 现在仍然很虚弱) He has returned from abroad. (含义是 现在已在此地 含义是:现在已在此地 含义是 现在已在此地)
Exercise 根据所给情况，用just,already或yet造句。 或 造句。 根据所给情况， 造句 1.After lunch you go to see a friend at her house.She says‘Would you like ‘ something to eat?’ You say: No, ’ I’ve just had lunch. thank you. _______________( have lunch ) 2.Joe goes out. Five minutes later,the phone rings and the caller says ‘Can hespeakjust Joe?’ You say: I’m out I has to gone’ ’ afraid _________________.( go out )
2. 现在完成时可以用来表示发生在过 现在完成时可以用来表示发生在过 去某一时刻一直持续到现在的动作和 状态,常与表示持续的时间状语连用. 常与表示持续的时间状语连用 状态 常与表示持续的时间状语连用 表示持续动作或状态的动词多是延续 表示持续动作或状态的动词多是延续 性动词。 性动词。 I haven’t seen her these days. ’ Mary has been ill for three days. I have lived here since 1998.
填空。 一、用for和since填空。 和 填空
for ______three
hours
_______a week for for _______a long time since _______1997 for ______two weeks since _______three years ago since _______ last month
பைடு நூலகம்
since and for
The woman has worked at this school for 2 years.( since two years ago) for + 时间段 for 2 years/a long time
since 2 years ago since+时间点 since+时间点 since 1998 since she came to the school)
A.1995
B. three years
B 2.I’ve been interested in Chinese for______.
A. last year B. one year 3. She has been a doctor for______. A A. two years B.two years ago 4. I’ve had a headache since_______. A A. I got up this morning B. five hours 5. We’ve been here for______. B A. one hour B. one o’clock
A 7. They’ve been in love since______. ’ B 8. We have known each other since_____.
9. --How long have you been like this?
A --Since______. st night
10.--How long has she worked here? --She has worked here for_____. B A. 1993 B. six years
“已经”通常用于肯定句中,放在句中。 已经”通常用于肯定句中 放在句中。 放在句中 already: I have already read this book. 有时，也用在疑问句中表示惊讶。 有时，也用在疑问句中表示惊讶。 Have you eaten up all the food already ?
4. 现在完成时常常与表示频度的时间状语 连用,如 连用 如 ever, never, twice等: 等 Have you ever been to Beijing？ ？ I have never heard of Bunny. I have used this pen only three times.
before
放在句末。 放在句末。 Ｉhave never read this kind of books before.