牛津译林版英语八年级下册同步课件Unit 1 Past and Present period 4 Grammar(共19张PPT)

(共19张PPT)
Unit 1 Past and present
Grammar
原句导学
She had breakfast at 6 o’clock. She has had breakfast.
He moved here two years ago. He has lived here for two years.
They have been to Hong Kong once.
语法聚焦
Present Perfect Tense
现在完成时
知识讲解
She has had breakfast.
她吃过早饭了。
They have been to Hong Kong once.
He has lived here for two years.
他们去过香港一次。
他已经住这两年了。
用法1：现在完成时表动作发生在过去并对现在造成影响。
（她现在不饿）
用法2：现在完成时表动作发生在过去并一直持续到现在，有可能继续持续下去。
用法3：现在完成时表到现在为止某动作发生了多少次。
助动词have (has）+
过去分词(done)
They have arrived.
主语 + 谓语（动词过去分词）
现在完成时的构成
阅读五个句子，讨论并完成问题
1. She has helped the children with their lessons for an hour.
2. They have learned English for three years.
3. I /we have not told it to him.
4. Jim has not seen the film before.
5.Has he finished his homework yet
Yes, he has./No, he hasn’t.
1.现在完成时结构
肯定：______+_______+_____
否定：______ + ______+______
一般疑问句：把________提前
肯定回答 __________ / 否定回答___________
2.have not 可缩写成_______has not 可缩写成 _______
（1）肯定句：
I/We/You/They + 助动词have + p.p(过去分词）+其它。
He/She/It + 助动词has + p.p(过去分词）+其它。
We ______________ Xiao Caiqi. (know）
She ______________very popular now. （become)
have known
has become
现在完成时的基本结构
（2）否定句：
Mr Chen hasn’t moved to any other city yet.
The snow hasn’t melted yet.
I/We/You/They+have not / haven’t +p.p(过分）+其它。
He/She/It +has not / hasn’t +p.p(过分）+其它。
(3)一般疑问句及回答
---Have+I/you/we/they+p.p(过去分词）+其它？
---Yes, I/you/we/they have.
---No, I/you/we/they haven’t.
---Has +she/he/it+p.p(过去分词） +其它？
---Yes, she/he/it has.
---No, she/he/it hasn’t.
1. _______ you ever_______ Xiao Caiqi before (meet）
2.______ she __________very popular recently （become)
Have met
---No, I haven’t.
Has become
---Yes, She has.
过去分词 regular verbs(规则动词）
help
hope
play
helped
hoped
cried
chatted
大多数动词末尾加-ed
+ed
+d
结尾是e的动词加-d
-y+ied
cry
结尾是“辅音字母+y”的动词，先变“y”为“ i”再加-ed
+ed
played
结尾是元音+y的
动词，直接加ed
双写辅音+ed
以“一个元音+一个辅音”
结尾的单音节动词
chat
plan
planned
Type original p.t p.p
cost cost cost
Come came come
run ran run
meet met met
catch caught caught
speak spoke spoken
forget forgot forgotten
drink drank drunk
eat ate eaten
ABB
AAA
ABC
ABA
不规则变化
课堂检测
1.I ____________ (do) my homework already.
2.He __________________(not finished) his homework yet.
3.______you ever _______(be) to Beijing
4.We ______ never ______ (see) such an exciting match before.
5.Mother _____ just _________(clean) the house. Please don’t come in.
6.They ________________(practice) this dialogue twice.
have done
has not finished
Have
been
have
seen
has
cleaned
have practiced
用现在完成时态完成下面的句子：
1 borrow
2 hope
3 make
4 get
5 plan
6 cry
7 send
8 watch
9 say
10 grow
11 hit
12 enjoy
1 borrow
2 hope
3 make
4 get
5 plan
6 cry
borrowed
hoped
made
got
planned
cried
sent
watched
said
grown
hit
enjoyed
课本练习P14
A
1 They ___________ (finish) their homework already.
2 John _____never _____ (visit) China.
3 Mr. Li __________ (repair) over ten bicycles since Monday.
4 We___________ (not see) each other for years.
5 My parents ____________ (not come) back yet.
6. Our teacher __________ (teach) us a lot about the history of China.
have finished
has visited
has repaired
haven’t seen
has taught
haven’t come
课本练习P14
B
课本练习P14
C
M: ______ you ______ (see) any films recently, Sandy
S: No, I haven’t. What about you
M: Well, I ______ (see) one last Saturday.
S: What is it about
M: It’s about the changes in Beijing over the past century. From this film, I __________ (learn) more about Beijing’s past and present.
S: Oh, I think I ___________ (hear) about the film. Do you plan to see it again
M: Yes, I’d like to.
Have
seen
saw
have heard
have learnt
课后作业
1. Revise the usage of the Present Perfect Tense.
2. Finish the exercises on the worksheet.
GOOD JOB