(共29张PPT)
现在完成时
Present Perfect
Part 1:现在完成时的定义
Part 2:现在完成时的结构
Part 3:现在完成时过去分词的变化规则
Part 4:现在完成时易错点分析
Part 5:即时训练
目录
contents
Yes, I have, I’ve just had it.
Have you had your lunch yet
yet:现在完成时标志词
疑问句句末:已经
否定句句末:还,尚未
Have you seen it yet
你已经看过它了吗?
I haven’t seen it yet.
我还没有看过它。
现在完成时情景问答
Think and Answer
1. 眉姐姐吃饭的动作发生在什么时候?
发生在过去
2. 眉姐姐现在还需要吃饭吗?
不需要吃了
past
now
She has just had it.
She has just had it, so she needn’t have it now.
现在完成时情景问答分析
Part 1:现在完成时的定义
DEFINITION
现在完成时的定义
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。常与just、ever、never、yet、 already、before连用。
例:
I have already had lunch.
我已经吃过午饭了。
表示现在不饿了,不用吃了
现在完成时的定义
2、表示从过去某一时刻开始一直持续到现在的动作或状态。常与时间状语for、since、in the past few years、in the last few years连用。
例:
I have lived here for five years.
我住在这里五年了。
表示过去到现在持续性住了五年这一状态
现在完成时的定义
3、表示说话前发生过一次或多次的动作,现在成为一种经验,一般在汉语中译为“过”。常与twice、three times等连用。
例:
Lily has been to London twice.
丽丽去过伦敦两次。
表示多次去过,所以她了解伦敦的情况
Part 2:现在完成时的结构
STRUCTURE
现在完成时的结构之肯定句
例:I have learned English for eight years.
我学英语八年了。
She has learned English for eight years.
我学英语八年了。
注意!当主语是第三人称单数时用has,其他人称用have
现在完成时的结构之否定句
例:I haven’t finished my homework.
我没有完成作业。
She hasn’t finished her homework.
她没有完成作业。
have not=haven’t,has not=hasn’t
现在完成时的结构之一般疑问句
例:Have you finished your homework.
你完成作业了吗?
Has she finished her homework.
她完成作业了吗?
将have/has提前
一般疑问句怎么回答?
肯定回答:Yes,主语+have/has.
否定回答:No,主语+haven’t/hasn’t.
例:-Have you finished your homework.
-Yes,I have.是的,我完成了。
-No,I haven’t.不,我没完成。
-Has she finished her homework.
-Yes,she has.是的,她完成了。
-No,she hasn’t.不,她没完成。
现在完成时的结构之特殊疑问句
例:How long have you been here
你来这里多长时间了?
Where has she gone
她去了哪里?
练一练
I’ve already arrived.
(改为一般疑问句)
_______ you ________ _____
2.He has just finished the task.
(改为否定句)
He________ _________ the task____.
3.John’s gone to England with his family.
(改为否定句)
John_______ ______to England with his family.
Have
arrived
yet
Hasn’t
finished
yet
hasn’t
gone
Part 3:现在完成时过去分
词的变化规则
CHANGES
过去分词的变化规则:规则变化
1.直接+ed
2.e结尾+d
3.重读闭音节结尾
双写辅音+ed
4.辅音+y结尾
变y为i+ed
work
hope
stop
study
worked
hoped
stopped
studied
规则变化
过去分词
原型
finish
visit
ask
help
plan
stop
live
carry
写出规则动词的过去分词
carried
finished
visited
asked
helped
planned
stoped
lived
过去分词的变化规则:不规则变化
cost-cost-cost
hit-hit-hit
cut-cut-cut
buy-bought-bought
lend-lent-lent
find-found-found
come-came-come
run-ran-run
become-became-become
go-went-gone
fly-flew-flown
take-took-taken
AAA型
ABB型
ABA型
ABC型
draw
begin
eat
fall
keep
know
lose
meet
写出不规则动词的过去分词
met
drawn
begun
eaten
fallen
kept
known
lost
练一练
他已经把灯关了。
___________________________
2.我们已经看过那部电影了。
___________________________
3.你去过北京吗?
___________________________
He has turned off the light.
We have seen that film before.
Have you ever been to Beijing
请翻译句子。
Part 4:现在完成时易错点分析
DIFFERENCE
现在完成时易错点
一、have/has been to 与have/has gone to的区别
①.“have/has been to+地名”表示“去过某地,已经回来了”.
例:He has been to America.
他去美国了。(现在已经回来了,人在这里)
②.“have/has gone to +地名”表示“去某地还没有回来”。
例:He has gone to America.
他去美国了。(已经动身去了,人不在这里)
1.My friends the Great Wall twice.
2. you ever Xiamen
3.He the restaurant,he isn’t here.
4.She Shanghai,she isn’t here.
Have been to
been to
has gone to
练一练
“去而已归”用have/has been to;
“去而未归”用have/has gone to.
Have
has gone to
现在完成时易错点
二、already和yet的用法
①.already多用于肯定句,而yet多用于疑问句或否定句。例:
The guests have already arrived.客人已经到了。
The guests have not arrived yet.客人还没到。
②.already有时也可用于疑问句中表示惊讶、怀疑,或者表示期望有一个肯定的回答。例:
Have you had your lunch yet 你吃过午饭了吗?(一般疑问句)
Have you had your lunch already 你已经吃过午饭了?(表示惊讶)
1.She has been a good dancer.
2.She has been a dancer .
3.He hasn’t solved the case .
4.Has he solved the case
already
already
yet
yet
练一练
already常用于肯定句;yet常用于否定句或疑问句
Part 5:即时训练
PRACTICE
1.She already her breakfast.
2.I here for 10 years.
3.- you cleaned the classroom
has
have lived
Practice
had
Have
I have.
-Yes,
-No,
I haven’t.
See you next time~
Bye bye!