高中语法 现在完成时和现在完成进行时PPT

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 )
ever
never
“曾经”通常用于疑问句 和肯定句中,放在句中。 I have ever seen this film. Have you ever been to the USA ?
“从来不” 用在否定句中,放在句 中。 Is he famous ?I have never heard of him .
Unit1 Grammar
Present perfect tense & present continuous tense
past
Yesterday , we cleaned the classroom.
now
Now , the classroom is clean because we have cleaned it.
用法1
强调过去发生的动作对现在产生的结 果或影响
1. My father bought many books for me yesterday . Now , I have a lot to read because my father has bought many books for me. ________________________________ 2. I saw this film last week. Now, I know this film because have seen it before I_____________________. 3. I did my homework yesterday. Now, I can give it to the teacher because I______________ have done it.
这些瞬间动词常与它对应的可以表示时间段的词语进行互换。 become—be borrow—keep buy—have begin (start)—be on open—be open die—be dead leave--be away come--be here/in go out—be out join--be a member/be in begin to study--study
just
“刚刚 ”用在陈述句中, 放在句中。 I have just bought a novel。
“以前”用在完成时中，
before
放在句末。 Ｉhave never read this kind of books before.
She began to work in 2005.
She still works here now. She has worked at this school for 9 years.
have (has) gone和have (has) been的区别
1.have (has) gone表示“已经去某地了” She has gone to Shanghai .(她可能已在去上海 的路上，或已到上海，总之现在不在这里。)
2.have (has) been表示“曾经去过某地” She has been to Shanghai three times.(她已经不 在上海，只说明她曾经去过。)
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， 不能延续，不能与for、since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。 如不能说：He has borrowed the book for two months.(ⅹ) 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.
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 1998 since she came to the school)
3. 现在完成时往往同表示不确定的过去时 间状语连用,如already, yet, just, before, recently, still, lately等标志词
He has already got a chance to go abroad. I haven't seen much of him recently (lately). We have seen that film before. Have they found the missing child yet ？
一、用for和since填空。
for ______three
hours
_______a week for since _______1997 for ______two weeks
since for ______three o’clock _______a long time
for ______two days since ______yesterday afternoon
2.表示过去开始的动作刚结束并在某种情况 下与现在有关联 —— Sorry, I’m late, have you been waiting long? —— Yes, I have been waiting for an hour.
C 1.The price _____recently, but I doubt whether it will remain so. A went down, B will go down C has gone down D was going down 2. In the past few years there ____ great C changes in Da Miao town. A is B were C have been D will be.
2. 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. 表示持续动作或状态的动词多是延续 性动词。
I haven’t seen her these days. Mary has been ill for three days. I have lived here since 1998.
4. 现在完成时常常与表示频度的时间状语 连用,如often, sometimes, ever, never, twice, on several occasion等: Have you ever been to Beijing？ I have never heard of Bunny. I have used this pen only three times. George has met that gentleman on several occasions.
4.You are going to a restaurant this evening.
You phone to reserve(预定）a table. Later your friend says ‘Shall I phone to reserve a table? ’You say: I have already done No,__________________ it (do)
“已经”通常用于肯定句中,放在句中。 already: I have already read this book. 有时，也用在疑问句中表示惊讶。 Have you eaten up all the food already ?
Yet:
“仍然，还 ” 用在疑问句和否定句 中，放在句末。 I haven’t read this book yet . Have you had breakfast yet ?
since _______three years since ______I came here ago since ______last Sunday since _______ last month
Exercise
根据所给情况，用just,already或yet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, thank I’ve just had lunch. you. _______________( have lunch ) 2.Joe goes out. Five minutes later,the phone rings and the caller says ‘Can I speak to Joe?’ You say: I’m afraid he has just gone out _________________.( go out )
past
I began to teach English at this school five years ago.