人教版英语八年级下册 Unit 8 Have you read Treasure Island yet-Section A Grammar focus-4c 课件(共28张PPT)

(共28张PPT)
Unit 8
Have you read Treasure Island yet
Section A 3
Grammar focus-4c
Revision
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.
用法：
1. 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。
e.g. –Have you had your lunch yet
–Yes, I have. I’ve just had it. (现在我不饿了。)
2. 表示动作或状态从过去某一时刻开始，一直延续到现在，而且可能还要继续下去。
现在完成时
e.g. I haven’t seen her these days.
I’ve known Bob for three years.
I’ve been at this school for over two years.
时间状语：
already, yet, just, ever, never, before
构成：
现在完成时是由“助动词have / has+ 动词的过去分词”构成的，规则动词的过去分词构成与过去式相同，不规则动词的过去分词则需逐个记忆。
动词的过去式的变化和过去分词的变化并不完全相同。我们对它们作了一个大致的分类。 (注：例子中单词的变化顺序为：动词原形 → 动词的过去式 → 动词的过去分词)
一、过去式和过去分词的变化相同
规则变化：
1.一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
句式：
1. 肯定句：主语 + have / has + 过去分词 (+ 其他)
2. 否定句：主语 + have / has + not + 过去分词(+ 其他)
3. 一般疑问句：have/ has + 主语 + 过去分词(+ 其他)
4. 特殊疑问句：
特殊疑问词 (不是句子主语) + have / has + 主语+过去分词 (+ 其他)
2) 特殊疑问词(是句子主语)+have / has+ 过去分词(+ 其他)
already和yet都可以作为现在完成时的标志词，
但它们的用法不同。
◆already一般用于肯定句中。
如：We have already cleaned up our classroom.
注意：already用于疑问句中时通常表示惊奇
如：Have you finished your homework already
I can’t believe it.
◆yet一般用于疑问句和否定句中。
如：Have you seen her yet
The bus hasn’t come yet.
活学活用
1. Write the forms of the past tense and past participle:
drink ______ ______
see ______ ______
find ______ ______
leave ______ ______
tell ______ ______
drank drunk
saw seen
found found
left left
told told
—Why is Mr. Yang still in the teachers’ office
—Maybe he ________ his work yet.
A. doesn’t finish B. hasn’t finished
C. haven’t finished
B
Exercises
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 have just drunk some tea
Have you found it
3. A: Do you know when Tom is leaving
B: ________________________.
(already/ leave)
A: When ___________________ (leave)
B: This morning.
4. A: Is your sister going to the movies
with us tonight
B: No. __________________________.
(already/ see the film)
He has already left
did he leave
She has already seen the film
5. A: What do your parents think about our plan
B: I __________________. (not/ tell them/yet)
haven’t told them yet
4b Fill in the blanks with the correct forms of the
words in the 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
hasn’t read
Group work
4c Complete the chart with information about
you and your friend.
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.
You Your friend Comments
Books I have already read
Movies I have already seen
Songs I have already heard
( )【2013广西贵港】
—Do you know the movie Lost in Thailand
—Yes. I ______ it twice. It’s funny.
A. saw B. see C. have seen D. will see
C
中考链接
( )【2013黑龙江牡丹江】
—Lunch
—No, thanks. I__________.
A. will eat B. am eating C. have eaten
( )【2013 湖北黄冈】
—Where is Tom We can’t find him anywhere.
— Perhaps he _____ home.
A. has come B. is going
C. went D. was going
C
A
Homework
Retell what you did yesterday and what you have done now.