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(共22张PPT)
Unit 8
Have you read Treasure Island yet
Section A (Grammar focus-4c)
知识目标:
掌握重点单词及句型
能力目标:
1.掌握现在完成时的用法。
2.掌握already和yet在现在完成时中的用法区别。
3.能正确运用现在完成时来描述已发生的事件。
情感目标:培养学生吃苦耐劳的精神, 同时也要拥有乐观向上的精神。
教学目标
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。
现在完成时
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。
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
●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.
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
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.
since 和for
since
since+过去时间点
I have lived here since 2015.
since+时间段+ago
I have lived here since 5 years ago .
since +从句
I have lived here since I came here.
for
for +一段时间
I have lived here for 5 years .
Complete the sentences with for or since.
1) Mr. Brown has had his TV ________ 15 years.
2) I’ve taken driving lessons _________ last month.
3) My friends haven’t visited me ___________ my birthday.
4) We haven’t used our car ______ a long time .
5) She hasn’t had a good cup of coffee _______years.
6) Tom has worn glasses _________ he was 7 years old.
for
since
since
for
for
since
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
A: When _________________ (leave)
B: This morning.
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)
did he leave
She has already seen the film
have not told them yet
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
Complete the chart with
information about you and a 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.
总结
按要求完成下列句子，每空一词。
1. I have already seen our new teacher.(改为否定句)
I ________ ________ our new teacher ________.
2. I have already finished reading Journey to the West. (对画线部分提问)
______ ______ ______ ______ reading yet
练习
haven't seen yet
What have you finished
3. Jane has already read Little Women.(改为一般疑问句)
________ Jane ________ Little Women yet
4. —Have they finished their work？(作否定回答)
—________，they ________.
5. Did you visit the zoo？(用现在完成时改写句子)
________ _______ ________ the zoo ________？
Has read
No haven't　
Have you visited yet
Thank you for listening!
See you tomorrow!

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