Unit 8 Have you read Treasure Island yet？语法--现在完成时态（课件）（共有PPT18张）

(共18张PPT)
八年级下册语法
现在完成时
阿勒泰市第三中学
刘利丹
EN
我父母结婚10年了。
过去时态
现在时态
The
Present
Perfect Tense
现在完成时态
基本用法：
(一)
I have alredy eaten breakfast.
我已经吃早饭了-一-我很饱，我不饿)
表示过去或已经完成的动作对现在
造成的影响或造成的结果。
基本用法（二）
I have ever been to Beijing many times
(我曾经去过北京许多次)
表示曾经做过某事
基本用法（三）
We have learnt English for 8 years
我们已经学习英语8年了)
表社薏去新樹必须基使婴图断陶动作或
状态，常与for或since连用。
现在完成时态的标志词
1.already已经（肯定句中）
2.yet还（否定句及
疑问句中)
3.ever曾经
4.never从来
5just刚刚
6.before以前
7.so far到目前为止
8.for一段时间
(for 2 years)
9.since+过去的时间点(since2 years ago)
+一般过去时态从句(since he came here),
for与
since
We have learnt English for 8 years.
We have learnt English since 8 years ago
We have learnt English since I was 6
years old.
Can
you
guess
动词的过去分词
She has seen the film.
He has read the book.
They have lived there for 10 years.
过去分词
(一)规则变化
原形
过去式
过去分词
work
worked
worked
live
lived
lived
study
studied
studied
drop
dropped
dropped
EN
过去分词
二)不规则变化
原形
过去式
过去分词
go
went
gone
come
came
come
see
saw
seen
cut
cut
cut
型
肯定式
I/You/We/They have finished the work.
He/She/It has finished the work.
否定式
1/You/We/Tl have not常缩略为haven't.
He/She/lt hahas not常缩略为hasn't。
构成：have(助动词)+p.p
has(第三人称单数助动词)+p.p