尾加__e_d__,
visit
visited visited
以不发音的e 结尾
直接加
d
live
lived
lived
以母“ +y辅”结音尾字“不B把____eo__yi规d__改o,_再,成则k加A变csrtP化uy d14y见1-1s4ctu2r”dieiedd
studied cried Nhomakorabea一个元音+一
they have taught
6 I bring
I have brought
7 she sits
she has sat
8 we live
we have lived
9 he opens
he has opened
过去分词的规则变化（与过去式基本相同）
类型
构成法
原形
过去式
过去分 词
一般情况下，
直接在词
Yes, I have. No, I haven’t.
we, travel by plane
We have travelled by plane. 否定句: We have not travelled by plane. 一般疑问句: Have you travelled by plane?
肯定/否定回答：Yes, we have. /No, we haven’t.
先双写
__辅__音____ ,
stop
stopped stopped
个辅音,
再加
___e_d___
drop droppeddropped
巩固练习：请写出以下动词的过去式和过去分词
look see invite do make open worry put
looked saw invited did made opened worried put
什么情况下使用has ?
2. 什么情况下使用has ?
主语是第三人称单数时， 使用has.
He has finished his homework. She has lived in Conghua for a long time. Eric has studied a little Chinese. My computer has stopped working.
He has had breakfast before. He/she is not hungry now.
I have had breakfast. I haven’t had breakfast. Have you had breakfast? Yes, I have. No, I haven’t.
finish her homework
She has finished her homework. 否定句:She hasn’t finished her homework.
一般疑问句: Has she finished her homework. 肯定/否定回答：Yes, she has. /No, she hasn’t.
Who is the man? Have you seen this movie? No, I haven’t seen it.
I know nothing about it.
Has your friend seen this movie?
No, she hasn’t seen it.
现在完成时的用法 描述_过__去__发生或已经完成的某一动作 对___现__在__的影响或结果。
No, he/she hasn’t. He/she is very hungry now.
Can Sarah use chopsticks?
Has she learned how to use chopsticks?
Yes, she has. She can use them now.
Who is Jerry and who is Tom?
其他情况下使用have 3. 过去分词的构成 I have seen this film. You have had breakfast. We have begun our class. They have made many new friends.
Write the words in the present perfect tense.
the simple present the present perfect
tense
tense
1 you allow
you have allowed
2 he goes
he has gone
3 we are
we have been
4 you sing
you have sung
5 they teach
Read and learn
Are you hungry now?
Have you had breakfast?
Yes, I have.
I am not hungry now.
No, I haven’t.
I am very hungry now.
Has your friend had breakfast? Yes, he/she has. He/she is not hungry now.
Have you seen this Movie？
Yes, I have
I know Jerry is the mouse and Tom is the cat.
Has your friend seen this movie?
Yes, he/she has.
He/she knows Jerry is the mouse and Tom is the cat.
Has your friend seen this movie?
Yes, she has seen it.
No, she hasn’t.
1.现在完成时是怎样构成的？ 肯定式： 主语+ have/has+过去分词(pp.)
否定式： 主语+have/has not+过去分词(pp.) 疑问式： Have/Has+主语+过去分词(pp.)
looked seen invited done made opened
worried put
the Great Wall
I, visit,
I have visited the Great Wall. 否定句 I have not visited the Great Wall. 疑问句 Have you visited the Great Wall?