Lesson 4 语法：现在完成时，下面我们就来聊聊关于现在完成进行时是怎么样的?接下来我们就一起去了解一下吧!
现在完成进行时是怎么样的
Lesson 4 语法：现在完成时
本课学会现在完成时构成，现在完成时所表达的意义（功能）及现在完成时与一般过去时的区别
- 构成： 主语 have/has 动词的过去分词（规则 ed;不规则）
do-did-done make-made-made take-took-taken
give-gave-given write-wrote-written find-found-found
speak-spoke-spoken have-had-had go-went-gone am/is/are –was/were—been
He has gone to Canada. He hasn’t gone to Canada yet.
I have lived here for eighteen years.
Have you lived here for 18 years?
2.功能：
1) 表示过去发生的动作对现在的影响。
---Would you like to have lunch with us?
---I have already had my lunch, I had it five minutes ago
过去的具体时间中（Yesterday, last..., ...ago, in 2020，just now(刚才）发生的动作用一般过去时
现在完成时通常与already(已经), yet(仍，还，已经) ,just(刚刚), ever（曾经）, never（从不）, before（以前）, three times（三次）,等表示不确定的时间副词连用。)
He has already finished his homework. 现在完成时
He finished his homework two hours ago. 一般过去时
I have seen the film before. 现在完成时
When did you see it? Two days ago.
Have you ever heard of the story? Yes, my teacher told us the story last week.
hear-heard-heard tell—told—told
否定句： 主语 haven’t/hasn’t 过去分词
The train has already arrived.
The train hasn’t arrived yet.
yet 用于否定句和一般疑问句句尾， already 用于肯定句句中或句尾
变一般疑问句： Have /Has 主语 过去分词 ？
He has arrived in Shanghai.
Has he arrived in Shanghai? Yes, he has. No, he hasn’t.
Have/has gone to 去了（未回） Have/has been to 去过（已回）
1.Where is your Grandpa? He has gone to the library to borrow books.
2.Will you go to Shanghai with me? No, I have been to Shanghai many times. I went (go) to Shanghai last week.
3.Where is Tom? He has gone to Beijing. He will come (come) back tomorrow.4.I’m not going to Beijing with them because I have been there before. here there home 之前不加to5.How many times have you been to Shanghai? Three times. I went to shanghai in 2016
2) 表达从过去一直持续到现在并可能持续下去的动作或状态。通常和表示一段时间的时间状语连用：
For 一段时间 since 时间点 自从…以来
He has studied English since 10 years ago.
=He has studied English for 10 years.
- We have learned English since 2018.2) Mrs. Liao has been in hospital since last week.3) I have stayed at my aunt’s home for two weeks.
4) We have lived in Tangshan for ten years.
so far, up till (to) now(到目前为止)， in the last few years（最近几年）…
So far, I haven’t received a single letter from my brother.
Up till now, they have read over 100 books.
练习题 ：
1. — I have seen the film “Titanic” already. — When ___ you ____ it？ — The day before yesterday.前天 A. have；seen B. will；see C. did；see D. did；seen 2. Mr. Black __________ in China since five years ago. A. lived B. has lived C. lives D. is going to live 3. We ____ trees last Sunday. So far 到目前为止we ___ over 3，000 trees there. A. planted； planted B. planted； have planted C. have planted； planted D. have planted； have planted
4. —Where have you ______ these days? —I have ______ to Yangzhou with my friends.A. been, gone B. been, been C. gone, been D. gone, gone5. —Where is your father? We haven’t seen each other for weeks.—______.A. He has been to America B. He has gone to EnglandC. He is going to Australia D. He would visit my grandparents
6. Jim ______ the Great Wall many times.A. went to B. goes to C. has gone to D. has been to
7. —______ to the U.S. ? —No, never, but I ______to Canada a few years ago.A. Have you been; went B. Have you gone, went C. Did you go; have been D. Will you go, been
8. Miss Wu has taught in this school ______. 完成时A. for ten years B. ten years ago C. since ten years D. for ten years ago9. I ______ ______ (finish) today’s homework already. I _________ (do) it two hours ago.
10. ______you ______ the film before? (see) Yes, I ______ (see) it last week.
,
