资源简介

(共36张PPT)
Read the following sentences we have seen.
Have you read Little Women yet
Yes, I have. / No, I haven't.
Has Tina read Treasure Island yet
Yes, she has. She thinks it’s fantastic.
Have you decided which book to write about yet
Yes, I have. I’ve already finished reading it. It was really good.
The Present Perfect with already, yet
1. Have you watered the plants yet
Yes, I have already watered them.
2. Have you finished your homework yet
Yes, I have already finished it.
3. Have you found your bike yet
Yes, I have already found it.
Present perfect
现在完成时：
表示过去发生或已经完成的某一动作对现在造成的影响或结果，或从过去开始一直延续到现在的动作或保存的状态。
●现在完成时的构成:
现在完成时是由“助动词have / has + 动词的过去分词”构成。助动词要和主语的人称、数保持一致。
一般疑问句： have / has …
Yes, I have. No, I haven’t.
Yes, she has. No, she hasn’t.
have breakfast
I’m not hungry now
moved here
in 2004
I still live here
now
past
现在完成时
现在完成时态可用于表达刚刚做完某事或已经做完某事，常见的标志词有already, yet等。下面我们一起看看这几个词的用法:
(1) already意为 “已经”，常放在have / has和动词之间，通常用于肯定句中。如:
They have already arrived at the hospital. 他们已经到达医院了。
already也可用于疑问句，表示期望得到肯定的回答或表示惊异，此时常放在句末。
(2) yet多用于否定句中，意为“还(没) ”；也常用于疑问句中，意为“现在，已经”。如:
The sun has not risen yet.
太阳还没有升起。
Has the man finished the work yet 这个男人做完工作了吗
Don’t worry about him. He has ________ arrived at home safely.
2. Have you told him the news ______
3. I have ____________ eaten some rice. Now I am full.
yet already
already
yet
already
Practice
Complete the sentences with the words in the box.
( ) Have you finished your homework _______
—No, not ____.
A. yet, already B. yet, yet
C. already, yet D. already, already
分析：此题应该选用B项。前面为疑问句，后面是否定回答，故两处空格均应该用yet 。
B
( ) --- Has Jim ____ cleaned his bedroom --- Yes, he has cleaned it ________.
A. just, yet B. already, just
C. just, already D. / , already
分析：此题应该选用D项。前面为疑问句，一般不用 just / already提问，故A、B、C项都是错误的，后面是肯定结构，故应该用already。
D
( ) Jim, have you had your lunch ______ It’s only 10:30 in the morning .
A. yet B. just now
C. just D. already
分析：此题应该选用D项。前面为疑问句，但是从“It’s only 10:30 in the morning .”中可以看出问话人非常惊讶，故应该用already连接。
D
一、过去式和过去分词的变化相同
规则变化：
一般在动词词尾直接加ed。如：
pick → picked → picked;
wish → wished → wished;
stay → stayed → stayed
2. 以不发音的e结尾的动词后面加d。如：
like → liked → liked;
hope → hoped → hoped;
phone → phoned → phoned
3. 以“辅音字母 + y”结尾的动词，变y为i，再加-ed。如：
study → studied → studied;
hurry → hurried → hurried;
reply → replied → replied
4. 词尾只有一个辅音字母的重读闭音节动词，要双写辅音字母，再加-ed。如：
stop → stopped → stopped;
clap → clapped → clapped
不规则变化：
5. 以不变应万变。如：
let → let → let;
put → put → put;
read → read → read
6. 若中间有双写e，则去掉一个e，单词末尾再加t。如：
feel → felt → felt;
keep → kept → kept;
sleep → slept → slept
7. 结尾的字母d变t。如：
lend → lent → lent;
build → built → built;
send → sent → sent
8. 变为以-ought或-aught结尾。如：
buy → bought → bought;
bring → brought → brought;
catch → caught → caught;
teach → taught → taught
现在完成时：表示过去发生或已经完成的某一动作对现在造成的影响或结果，或从过去开始一直延续到现在的动作或保存的状态，强调的是现在的情况，不能和表示过去的时间状语连用（如：in 1990，last Sunday 等）。
一般过去时：一般过去时只表示过去的动作或状态，和现在不发生关系（即动作或状态在现在已经结束），它可以和表示过去的时间状语连用。
现在完成时与一般过去时的区别：
I saw this film yesterday.
（强调看的动作发生过了） I have seen this film.
（强调对现在的影响，电影的内容已经知道了） Why did you get up so early
（强调起床的动作已发生过了） Who hasn’t handed in his paper
（强调有卷子未交，疑为不公平竞争）
4a
Use the words in brackets to complete the conversations.
1. A: Would you like something to drink
B: No, thanks. __________________________. (just / drink some tea)
2. A: I heard you lost your key. __________________________ (find)
B: No, not yet.
I’ve just drunk some tea
Have you found it yet
3. A: Do you know when Tom is leaving
B: __________________________. (already / leave)
A: When _________________ (leave)
B: This morning.
Tom/He has already left
did he leave
4. A: Is your sister going to the movies with us tonight
B: No. _______________________________. (already/see the film)
5. A: What do your parents think about our plan
B: I ________________________________. (not / tell them / yet)
have not/haven’t told them yet
She has already seen the film
4b
Fill in the blanks with the correct forms of the words in brackets.
Sally ______ (love) reading. In the morning, she reads the newspaper and in the evening she reads books. She ______ already _________ (read) more than 100 different books! Her favorite kind of books is science fiction. She is interested in science and technology and loves to imagine what the world _______ (be) like in 50 years.
loves
has
read
will be
She __________ (finish) reading a book about robots last week and ___________ (write) a book report about it next week for her French class. Every time she is in the library, Sally looks at the many books she _____________ (not read) yet and she can’t wait to read them!
finished
will write
has not read
A: What books have you already read
B: I have already read Tom Sawyer and Harry Potter.
A: What do you think of them
B: Well, I think Harry Potter was exciting, but Tom
Sawyer was a bit boring.
4c
Complete the chart with information about you and a friend.
Group work
You Your friend Comments
Books I have already read
Movies I have already seen
Songs I have already heard
A: What things have you already done this week
B: I have already …
A: What things haven’t you done this week
B: Well, I haven’t … How about you
A: I have …
一、用括号内所给单词的适当形式填空。
1．They __________(go) to the library an hour ago. Have they
____________(finish) cleaning it
2．—__________you __________(see) the new film yet
—No, I'm going to see it tomorrow.
3．I ___________(hear) from Alan last week. I have already
__________(write) back to him.
4．Jim ____________(not come) back yet.His mom is still waiting for him.
5．We have _________(tell) her the bad news.She must be very sad now.
went
finished
Have
seen
heard
written
hasn't come
told
( ) —Why was he late for school yesterday
—He overslept. By the time he got to the bus stop,
the bus _____ already _____.
A. was, leaving B. has, left
C. would, leave D. had, left
D
二、选择题
( ) —When and where to spend the holiday _______ yet.
—Let’s make it now.
A. is decided B. doesn’t decide
C. has not been decided D. has decided
C
( ) I began watching here an hour ago, but now nothing ________ yet.
A. happens B. will happen
C. happened D. has happened
D
( ) —Will you go and see the movie Net Mother with me
—Thank you. But I _____it already.
A. saw B. have seen C. see D. will see
B
( ) —Is Bohai Bridge open to the public yet
—Yes. It ______ for almost one and a half months.
A. has opened B. has being opened
C. has been open D. was open
C
( ) — Are you going to the bank, Laura
—No, I _______ to the bank already.
A. have been B. have gone
C. am going D. had been
A
( ) —China develops so fast.
—That’s true. It ______ a lot already.
A. changes B. changed
C. will change D. has changed
D
( ) Our country ______the sixth population census (人口普查) already.
A. finished B. has finished
C. will finish D. finishes
B
( ) —Will you please go to see the movie Guanyinshan with me
—No, I won’t. I ______ already.
A. saw B. have seen
C. see D. will see
B
(2017·安徽) I am surprised at the new look of my hometown, for it _____ a lot over the years.
A. changed B. changes
C. will change D. has changed
(2017·四川南充) --Look! Your teacher Miss White is over there.
--No, it can’t be her. She ______ to Beijing.
A. has gone B. has been
C. went D. will go
D
A
( ) I _____ scared of dogs ever since a dog hurt me when I was five years old. （2015杭州）
A. will be B. was
C. have been D. would be
( ) －Ben and Sue aren’t home, are they －No. They _____ to London on business. （2015江西）
A. have gone B. go
C. have been D. will go
C
A
三、按要求完成下列句子。
1．Kate has already tried Chinese food.(改为一般疑问句，并作肯定回答)
—__________Kate __________Chinese food___________
—Yes，____________．
2．They have already planted some trees on the hill.(改为否定句)
They _____________planted any trees on the hill __________．
Has
tried
yet
she has
haven't
yet
3．Tom has read the book three times.(对画线部分提问)
____________________times has Tom read the book
4．I have already finished reading Journey to he West．(对画线部分提问)
________________________________reading yet
5．Did you visit the zoo？(用现在完成时改写句子)
_____________________the zoo____________
How many
What have you finished
Have you visited
yet
1. Do the other exercises.

展开更多......

收起↑