Module2 Experiences 语法专项：现在完成时 课件（(共14张PPT)）

(共14张PPT)
Module2
语法专项课件
（现在完成时）
初中英语外研版八年级下册
Part
语法透析
考点大观
易错辨析
通关训练
语法透视
考点大观
易错辨析
通关训练
现在完成时定义
现在完成时定义三要素：
1. 表示到现在为止已经完成或刚刚完成的动作。
2.一件发生在过去的事情对现在产生影响。
3.一个动作开始于过去，并持续到现在（也许还将持续下去）。
We have known each other since 2005.
我们从2005年认识的。
I have lived in Wuhan for several years.
我在武汉住了好几年了。
现在完成时结构
语法透视
考点大观
易错辨析
通关训练
肯定句：主语 + have/ has + 过去分词+...
否定句:主语+haven’t ( have not) +过去分词… 主语+hasn’t ( has not ) +过去分词...
疑问句:Have / Has+主语+过去分词...
I haven’t finished my homework. 我还没有完成作业。
Have you finished your homework 你完成作业了没？
I have finished my homework. 我已经完成作业了。
现在完成时的用法
语法透视
考点大观
易错辨析
通关训练
1) 表示到现在为止已经完成或刚刚完成的动作。
Now we have planted all the trees.
截止目前，我们种完了所有的树。
He has just come back. 他已经回来了。
They have built many buildings in this city.
他们在这个城市建成了好多建筑物。
现在完成时的用法
语法透视
考点大观
易错辨析
通关训练
2) 表示过去发生的动作,强调结果或对现在的影响。
Someone has broken the window.
I have already lost the key.
I haven’t read that book yet .
I have just cleaned my hands.
(窗户现在是坏的)
(我现在没有钥匙)
(不了解书的内容)
(手是干净的)
现在完成时的用法
语法透视
考点大观
易错辨析
通关训练
3) 表示从过去开始并持续到现在的动作或状态。
She has learned English for 5 years.
她学英语已经五年了。
He has lived in Beijing since he was born .
从他出生那天起就住在北京。
Has he lived in Shenzhen for 4 years
他住在深圳四年了吗？
语法透视
考点大观
易错辨析
通关训练
过去分词的变化（规则）
(1)一般动词，在词尾直接加“ ed ”。
work---worked---worked
(2)以“ e ”结尾的动词，只在词尾加“ d ”。
　 live---lived---lived
(3)以“辅音字母 + y ”结尾的动词，将 “y” 变为 “i”，再加“ ed ”。
study---studied---studied
(4)重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加“ ed ”。
drop---dropped--dropped
语法透视
考点大观
易错辨析
通关训练
过去分词的变化（不规则）
A.过去分词与不规则动词的过去式形式一样
have—had—had
spend —spent—spent
make—made—made
say—said—said
find—found—found
hear—heard—heard
meet—met—met
leave—left—left
fly—flied—flied
语法透视
考点大观
易错辨析
通关训练
过去分词的变化（不规则）
B.过去分词与过去式形式不一样
take—took—taken
see — saw — seen
speak —spoke—spoken
sing—sang—sung
drive—drove—driven
be—was/were—been
go—went—gone
语法透视
考点大观
易错辨析
通关训练
过去分词的变化（不规则）
C.过去分词，过去式与动词原形一样
cut—cut—cut
put —put—put
let—let—let
read—read—read
语法透视
Next
考点大观
易错辨析
通关训练
词语正确形式填空
They ______________ their homework. (finish）
He ______________his homework.（finish)
have finished
has finished
They _______________ their homework yet. (finish）
He _______________ his homework yet. （finish)
haven’t finished
hasn’t finished
语法透视
考点大观
易错辨析
通关训练
1. I _________(see) the 3D film Avatar. It’s amazing!
2. I _________(see) it one month ago.
have seen
saw
词语正确形式填空
3. The Greens _________ (live) in China since they _______(move) here in 2003.
has lived
moved
4. Mr. Li _______ (begin) to work in this factory in 1990. He ___________ (work) in the factory for 20 years.
began
has worked
Homework:
Finish exercise “现在完成时专项练习”。