资源简介

(共18张PPT)
Let’s enjoy
Have you ever heard of this song
Simple past tense
(一般过去时)
Present perfect tense
（现在完成时）
Unit 3
The world at one click
Grammar
Learning aims
1.To review the uses of simple past tense.
2. To review the uses of present perfect tense.
3. To tell the differences between the simple past tense and the present perfect tense.
4.To be able to make up some sentences using the simple past tense and the present perfect tense.
一般
过去时
构成
用法
常用
时间状语
动词的过去式
1. 表示过去某个时
间发生的动作或
存在的状态。
2. 表示过去经常或
反复发生的动作。
yesterday
last night
in 1990
two days ago …
一般过去时
现在完成时
构成
用法
常用
时间状语
have/has +过去分词
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。
2. 表示从过去某一时间开始一直持续到现在的动作或状态。
already ,yet,just,neverbefore,recently,over the years,in the past few years
现在完成时
Tense Structure (结构）
the simple past tense
the present perfect tense
S + V过去式 + …
S + didn’t + V原+ …
S + wasn’t / weren’t+ V原+ …
Was/ Were + S + …
Yes,…was/ were. No, … wasn’t/ weren’t.
Did + S + V原 + …
Yes,…did. No, … didn’t.
S + have/has + V过去分词 + …
S + haven’t/hasn’t + V过去分词 + …
Have/ Has + S + V过去分词 + …
Yes,…have/ has. No, … haven’t/ hasn’t.
We moved into a small flat when we arrived.
We’ve lived in a small flat since we arrived.
Tense The time expressions (时间状语)
the simple past tense
the present perfect tense
yesterday / last… / in + 表过去的年月
/ two days ago / just now / last
/ the next day等
already, yet, ever, never, recently, just, before,
for + … / since + …
these years, so far, up to/till now, in/during/over the past/last few/three years
once, twice, several times等
I ________ (visit) the Palace Museum with my grandparents the other day.
I ________ (climb) Mount Huang last summer.
visited
climbed
Complete the sentences with the correct forms of the words in brackets.
I am happy that I ___________ (learn) to swim.
______ you ever ______ (try) the famous Tianjin Baozi
Have tried
have learnt
You can either travel or read ,and either your body or soul must be on the way.
(要么旅行，要么读书，身体和灵魂，必须有一个在路上)
Which do you like better, take online tours or travel for yourself Why
Further thinking
Travelling can broaden our horizons(开阔视野，增长见识)
Have
tried
have seen
visited
have played
has visited
has learned/learnt
1.learn learned/learnt用法
学习做某事：
学习怎么做某事：
向某人学习：
自学某事：
词组
学习游泳/拉小提琴：
学习怎么下棋：
互相学习：
自学一门外语：
learn to do
learn how to do sth
learn from sb
learn sth by oneself=teach oneself sth
learn how to play chess
learn to swim/learn to play the violin
learn from each other
learn a foreign language by oneself
=teach oneself a foreign language
Exercise
请认真阅读下面短文，填入一个适当的单词或括号内单词的正确形式。
Nowadays,"the world at one click" is not just a phrase-it's a real way totravel. Many people use virtual tools to explore places they've never been to, and it's changing1.(slow) how we plan trips.
Last week, Mr Lee's class did a project about global cultures. Each student had to2. (book)a"virtual trip"and write short3. (report) about what they learnt. For example, Amy chose to"visit!Mexico. She used4. online tool to see a market. People there had5. (sign) boards with bag and hatprices.
When talking6.virtual travel, the biggest advantage is its simplicity. You don't need to buyplane7. (ticket) ,wait in airports, or carry heavy luggage. You can "go" to a castle in Scotland in themomning and a rainforest in Brazil in the afternoon-all from8. (you) desk.Some people say virtual travel isn't as good as real trips.9.it's a great choice for those who can'ttravel far, like the elderly or busy students. It lets them leam about different countries and cultureseasily, without10. (leave) home. With just one click, the world opens up to everyone.
Homework
Try to recommend a place you have been to, using the two tenses,and share it with us next class.
Write about Millie’s trip, using the simple past tense and the present perfect tense.
Millie’s trip to the USA
时间 去年寒假，在美国待了一周
游玩伙伴 父母
游玩地点 1. 自由女神像（The Statue of Liberty），美
国的象征之一……
2. 白宫，非常宏伟的建筑……
3. 百老汇，自20世纪早期以来就已经很有名
了，欣赏了音乐剧……
感受 虽然只去过一次，但是……
Writing

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