(共28张PPT)
Section A (Grammar Focus-4c)
Unit 8 Have you read Treasure Island yet
学习目标
Key words & phrases:
fiction; science fiction; technology; French; think about; can't wait
to do sth.; more than.
Key sentences:
1. She is interested in science and technology and loves to imagine
what the world will be like in 50 years.
2. She has already read more than 100 different books.
3. What books have you already read
To learn the usage of Pesent Perfect Tense and review other tenses.
Lead in
Let's watch a video !
Grammar Focus
Presentation
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.
How is the present perfect tense formed
have/has + 过去分词
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.
What adverbs are often used with the present perfect tense
Already and yet.
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.
含现在完成时的句子如何构成一般疑问句？
将助动词have/has放在主语之前。
Grammar
现在完成时（一）
一、现在完成时的基本结构
现在完成时由“助动词 have/has + 过去分词”构成，其基本句式结构为：
① 肯定句：主语 + have/has + 过去分词 + 其他.
I have seen this film.
② 否定句：主语 + have/has not + 过去分词 + 其他.
I have not seen this film.
③ 一般疑问句：Have/Has + 主语 + 过去分词 + 其他
肯定回答：Yes, 主语 + have/has. 否定回答：No, 主语 + haven't/hasn't.
—Have you seen the film —Yes, I have. / No, I haven't.
和主语一致
have not = haven't; has not = hasn't
have/has 常可缩略为 -'ve/-'s
二、过去分词的构成
1. 规则变化（与动词过去式规则一样，此类称作规则动词）
一般在词尾直接加 -ed 以不发音的e结尾的，加 -d 以“辅音字母+y”结尾的，改y为i加-ed 重读闭音节以一个辅音字母结尾的，双写这个辅音字母后加 -ed
work→worked slice→sliced study→studied stop→stopped
-ed 的读音规则：
① 在元音或浊辅音后读 [d]，如 tried [tra d]，lived [l vd]。
② 在清辅音后读 [t]，如 worked [w kt]，stopped [st pt]。
③ 在[t][d]后读[ d]，如 mended [mend d]，wanted [w nt d]。
2. 不规则变化（此类称作不规则动词，有很多）
原形（不定式） 过去式 过去分词
be was/were been
have had had
choose chose chosen
put put put
run ran run
参看课本P136-137 Irregular Verbs（不规则动词表） 三、现在完成时的用法
1. 表示过去发生或已经完成的动作对现在造成的影响或结果。常和 just（刚刚），already（已经），yet（还，仍然），ever（曾经），never（从未），before（以前），so far（到目前为止）等连用。
— Have you had your breakfast yet
— Yes, I have. I've just had it.
— Have you ever heard this song
— No. I've never heard it before.
Julia has collected over 100 beautiful hair clips so far.
现在完成时用法1：
表示过去发生或已经完成的动作对现在造成的影响或结果。
past
I had breakfast.
I'm not hungry now.
present
I have already had breakfast.
（早餐过去吃的，现在不饿。）
图示法表示
2. 现在完成时还可以表示过去某一时间开始并一直持续到现在的动作或状态，常与“for + 时间段”或“since + 时间点 / 从句”连用，这时要用延续性动词。
They have worked in this company for 30 years.
He has been in the army since 2016.
（错：He has joined the army since 2016.）
【特别提醒】如果要对 for 或 since 短语提问，疑问词用 how long。
— How long have you lived in this area
— For at least 10 years.
现在完成时用法2：
表示过去某一时间开始并一直持续到现在的动作或状态。
图示法表示
past
I moved here
in 1990.
I still live here.
present
I have lived here for 30 years.
(30年来一直生活在这里）
四、already 与 yet 在现在完成时中的用法解析
yet 常用于否定句或疑问句句末。用于表示某事尚未发生或某情形尚未出现，或用于询问某事是否已经发生。 He hasn't finished the book yet.
Have you seen him yet
already 常用于肯定句中，用于强调某事已经开始出现；也可用于疑问句中，表示因某事的发生早于预料而感到吃惊。 They have already known each other.
Have you eaten all that food already
五、现在完成时 VS 一般过去时
现在完成时表示过去发生的某一动作对现在造成的影响或结果，强调的是现在的情况，因此不能和表示过去的时间状语连用。
I have already done my homework.（不能用last night等）
I've been to Paris before.（不能用last year等）
2.一般过去时只表示过去的动作和状态，与现在无关。可以和表示过去的时间状语连用。
I did my homework last night.
When did you go to Paris （when 一定不要和现在完成时连用）
3. 日常对话中通常两种时态配合使用，开始提到一件事做没做或发生过时用现在完成时，说起这件事具体情形时用一般过去时。
— Have you been to Japan
— Yes, I have. I went there last year.
— Who did you go with
— …
4a
Use the words in brackets to complete the conversations.
Tip: Find the key words to identify which tense to use.
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.
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)
He has already left
did he leave
She has already seen the film
have not/haven't told them yet
4b
Fill in the blanks with the correct forms of the words in brackets.
Tip: Find the key words to identify which tense to use.
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.
fiction n. 小说
science fiction 科幻小说（或影片等）
n. 科技；工艺
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
n. 法语
can't wait to do sth.迫不及待做某事
4c
Complete the chart with information about you and a friend.
A: What books have you already read
B: I've 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.
你觉得它们如何？
You Your friend Comments
Books I have already read
Movies I have already seen
Songs I have already heard
Exercises
一、单项选择。
1.— It's ten years since we came here.
— How time flies! We _____ in China for so long.
A. work B. worked C. will work D. have worked
2.Today, all the erhu masters play and praise Erquan Yingyue. It _____ one of China's national treasures.
A.becomes B. became C. has become D. become
3.Miss Brown, we _____ cleaning our classroom. Can we go home now
A. finish B. finishing C. are finished D. have finished
D
C
D
4.— Your new watch is so nice! When did you buy it
— In April. I ______ it for two months.
A. have had B. had C. have bought D. bought
5.— Has your sister finished reading ________
— Yes. She has________ finished.
A. yet; yet B. yet; already
C. already; yet D. already; already
A
B
二、用括号中所给单词的适当形式填空。
1.She __________(not read) the book yet.
2.________ you ________(decide) which book to buy yet
3.Tom won't go to the cinema with us because he ________ already ________ (see) the film.
4.David hasn't ________(finish) ________(read) Harry Potter yet.
5.We ________ just ________(clean) the classroom.
6.I ________(lend) my bike to her yesterday, but she ____________ (not give) it back to me yet.
hasn't read
Have
has
seen
finished
have
cleaned
decided
reading
lent
hasn't given
三、按要求改写句子，每空一词。
1.She has already written the music. (改为一般疑问句)
________ she written the music _______
2.They studied English 2 years ago. (用 since two years ago 改写)
They ______ ________ English since two years ago.
3.Has Tom helped his parents yet (作出肯定回答)
_______, _____ _______.
Has
yet
have studied
Yes he has
4.The three students have been together for 3 hours. (对画线部分提问)
___________ ____________ have the three students been together
5.She has already gone to England. (改为否定句)
She _____________ gone to England _____________.
6.He hasn't come to school because he's ill. (对画线部分提问)
_____________ _____________ he come to school
How long
hasn't
Why hasn't
yet
Homework
Preview the new words and phrases in Section B(1a-1d).
Do the exercises in students' book.
Thank you!
