牛津译林版英语八年级下Unit 3 Online tours period 4 Grammar课件（23张PPT无素材）
文档属性
| 名称 | 牛津译林版英语八年级下Unit 3 Online tours period 4 Grammar课件（23张PPT无素材） |  | |
| 格式 | zip | ||
| 文件大小 | 319.4KB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 牛津译林版 | ||
| 科目 | 英语 | ||
| 更新时间 | 2022-05-13 23:41:32 | ||
图片预览
文档简介
(共23张PPT)
Unit 3 Online tours
Grammar
学习目标
一、To understand the differences between the simple past tense and the present perfect tense.
二、To grasp the expressions with the present perfect tense.
三、To grasp the expressions with the simple past tense.
四、To understand different uses of the present perfect tense.
课程导入
Have you ever been to Beijing
When did you go there
How many times have you been to Beijing
Have you bought a computer
When and where did you buy it
语法聚焦
Simple past tense and present perfect tense
一般过去时和现在完成时
past
present
Daniel went to Beijing two years ago.
We use the simple past tense to tell what happened in the past.
We use the present perfect tense to talk about an action that started in the past and continues to the present.
Daniel has lived in Beijing for two years.
past
present
知识讲解
We use the simple past tense to tell what happened in the past.
past
present
Daniel bought a new computer last month.
We use the present perfect tense to talk about the result of an action. When the action happened is not very important. It may have just happened or happened some time ago.
Daniel has bought a new computer. (He has a computer now.)
past
present
We use the simple past tense to tell what happened in the past.
past
present
He visited Canada in 2010 and 2011.
We use the present perfect tense to tell how many times an action has happened till now.
He has been to Canada twice.
past
present
现在完成时和一般过去时区别
现在完成时 ①表示到现在为止已经完成的动作。
②表示动作发生在过去，对现在造成影响。
③表示动作开始于过去，一直持续到现在，并有可能继续持续下去。
一般过去时 表示过去某时发生的动作。
现在完成时和一般过去时用法不同
现在完成时和一般过去时结构不同
现在完成时
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+...
一般疑问句:Have/Has+主语+过去分词...
一般过去时
肯定句：主语 + 过去式 +...
主语 + was/were + 表语+...
否定句：
主语 + did not (didn’t) + 动词原形 + …
主语 + was/were not (wasn’t/weren’t) + 表语+...
一般疑问句：Did + 主语 + 动词原形 + …
Was/Were + 主语 + 表语+…
现在完成时
副词作标志词：just, already, yet
since + 时间点/(时间段+ago)/一般过去时句子；for + 时间段
表示次数的时间状语：once, twice, three times, ever, never
一般过去时
过去时间点：just now, at that time, yesterday, this morning, three years ago等
过去时间段：in the past, in + 过去的年份, last week, once upon a time等
现在完成时和一般过去时时间状语不同
Different between the two
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.
A
I am happy that I ___________ (learn) to swim.
______ you ever ______ (try) the famous Tianjin Baozi
Have tried
have learnt
I ________________ (finish/just) my homework.
Millie _______ (finish) her homework 20 minutes ago.
2. I ______ (write) an email to my friend yesterday.
Daniel __________________ (write/already) two emails.
have just finished
finished
wrote
has already written
Complete the sentences with the correct forms
of the words in brackets.
B
3. I ____ (be) in Hainan last month.
Some of our classmates ____________ (not be) to Hainan yet.
4. I _________ (live) in Sunshine Town since I was born.
Daniel ____ (live) in Nanjing in 2007.
was
have not been
have lived
lived
Millie: ___________________ (you/be/ever) to Nanjing
Simon: Yes. I(2)____________(be) there three times.
Millie: When (3)____________ (you/go) there last
Simon: Last summer. I (4)______(spend) a week there.
Millie: (5)____________ (you/like) it
Simon: Oh yes. I (6)_____ (have) a great time there. I (7)______ (visit) many places of interest and (8)____ (eat) lots of local food.
Millie: Lucky you! I (9)_______________ (be/never) there.
Have you ever been
have been
did you go
spent
Do you like
had
visited
ate
have never been
Complete the conversation with the correct forms
of the words in brackets.
C
be buy read return see show
Saturday, 15 March
Have you ever dreamt of travelling around the world without a passport Yes, you can realize your dream by taking an online tour. Yesterday Danniel (1)_________ me an online tour of the USA. I (2)_____ never _____ so many wonderful pictrues before.
showed
have seen
Complete Millie’s diary entry with the correct
forms of the words in brackets.
D
Last week, I (3)_________ a book about the places of interest in the USA. I (4)_________ 20 pages already. It’s really interesting. My dad (5)_____ just _________ from the USA, but I (6) ______ never_______ there. I hope I can visit the USA some day.
have been
bought
have read
has
returned
Summary
用法不同：一般过去时表示过去某个时间发生的事、存在的状态或经常发生的动作，和现在不发生关系。现在完成时表示的动作或状态与现在的情况有联系，侧重这一动作对现在所造成的影响。
现在完成时/一般过去时的区别
Summary
结构不同：
一般过去时：主语 + 谓语动词的过去式
现在完成时：主语 + have/has+动词的过去分词
时间状语不同：一般过去时通常与表示过去的具体的时间状语连用。而现在完成时则常与表示不确切的时间副词连用。
课堂检测
1. I _________(live) in this area since I was born.
2. Millie_______ (finish) her homework 20 minutes ago.
3. You can realize your dream by_______ (take) an online English course.
4. Last week, I_______ (buy) a book about the places of interest in the USA.
用所给词的适当形式填空
have lived
finished
bought
taking
课后作业
1. Recite the new words and phrases.
2. Revise the difference between the simple past tense and the present perfect tense.
GOOD JOB
Unit 3 Online tours
Grammar
学习目标
一、To understand the differences between the simple past tense and the present perfect tense.
二、To grasp the expressions with the present perfect tense.
三、To grasp the expressions with the simple past tense.
四、To understand different uses of the present perfect tense.
课程导入
Have you ever been to Beijing
When did you go there
How many times have you been to Beijing
Have you bought a computer
When and where did you buy it
语法聚焦
Simple past tense and present perfect tense
一般过去时和现在完成时
past
present
Daniel went to Beijing two years ago.
We use the simple past tense to tell what happened in the past.
We use the present perfect tense to talk about an action that started in the past and continues to the present.
Daniel has lived in Beijing for two years.
past
present
知识讲解
We use the simple past tense to tell what happened in the past.
past
present
Daniel bought a new computer last month.
We use the present perfect tense to talk about the result of an action. When the action happened is not very important. It may have just happened or happened some time ago.
Daniel has bought a new computer. (He has a computer now.)
past
present
We use the simple past tense to tell what happened in the past.
past
present
He visited Canada in 2010 and 2011.
We use the present perfect tense to tell how many times an action has happened till now.
He has been to Canada twice.
past
present
现在完成时和一般过去时区别
现在完成时 ①表示到现在为止已经完成的动作。
②表示动作发生在过去，对现在造成影响。
③表示动作开始于过去，一直持续到现在，并有可能继续持续下去。
一般过去时 表示过去某时发生的动作。
现在完成时和一般过去时用法不同
现在完成时和一般过去时结构不同
现在完成时
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+...
一般疑问句:Have/Has+主语+过去分词...
一般过去时
肯定句：主语 + 过去式 +...
主语 + was/were + 表语+...
否定句：
主语 + did not (didn’t) + 动词原形 + …
主语 + was/were not (wasn’t/weren’t) + 表语+...
一般疑问句：Did + 主语 + 动词原形 + …
Was/Were + 主语 + 表语+…
现在完成时
副词作标志词：just, already, yet
since + 时间点/(时间段+ago)/一般过去时句子；for + 时间段
表示次数的时间状语：once, twice, three times, ever, never
一般过去时
过去时间点：just now, at that time, yesterday, this morning, three years ago等
过去时间段：in the past, in + 过去的年份, last week, once upon a time等
现在完成时和一般过去时时间状语不同
Different between the two
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.
A
I am happy that I ___________ (learn) to swim.
______ you ever ______ (try) the famous Tianjin Baozi
Have tried
have learnt
I ________________ (finish/just) my homework.
Millie _______ (finish) her homework 20 minutes ago.
2. I ______ (write) an email to my friend yesterday.
Daniel __________________ (write/already) two emails.
have just finished
finished
wrote
has already written
Complete the sentences with the correct forms
of the words in brackets.
B
3. I ____ (be) in Hainan last month.
Some of our classmates ____________ (not be) to Hainan yet.
4. I _________ (live) in Sunshine Town since I was born.
Daniel ____ (live) in Nanjing in 2007.
was
have not been
have lived
lived
Millie: ___________________ (you/be/ever) to Nanjing
Simon: Yes. I(2)____________(be) there three times.
Millie: When (3)____________ (you/go) there last
Simon: Last summer. I (4)______(spend) a week there.
Millie: (5)____________ (you/like) it
Simon: Oh yes. I (6)_____ (have) a great time there. I (7)______ (visit) many places of interest and (8)____ (eat) lots of local food.
Millie: Lucky you! I (9)_______________ (be/never) there.
Have you ever been
have been
did you go
spent
Do you like
had
visited
ate
have never been
Complete the conversation with the correct forms
of the words in brackets.
C
be buy read return see show
Saturday, 15 March
Have you ever dreamt of travelling around the world without a passport Yes, you can realize your dream by taking an online tour. Yesterday Danniel (1)_________ me an online tour of the USA. I (2)_____ never _____ so many wonderful pictrues before.
showed
have seen
Complete Millie’s diary entry with the correct
forms of the words in brackets.
D
Last week, I (3)_________ a book about the places of interest in the USA. I (4)_________ 20 pages already. It’s really interesting. My dad (5)_____ just _________ from the USA, but I (6) ______ never_______ there. I hope I can visit the USA some day.
have been
bought
have read
has
returned
Summary
用法不同：一般过去时表示过去某个时间发生的事、存在的状态或经常发生的动作，和现在不发生关系。现在完成时表示的动作或状态与现在的情况有联系，侧重这一动作对现在所造成的影响。
现在完成时/一般过去时的区别
Summary
结构不同：
一般过去时：主语 + 谓语动词的过去式
现在完成时：主语 + have/has+动词的过去分词
时间状语不同：一般过去时通常与表示过去的具体的时间状语连用。而现在完成时则常与表示不确切的时间副词连用。
课堂检测
1. I _________(live) in this area since I was born.
2. Millie_______ (finish) her homework 20 minutes ago.
3. You can realize your dream by_______ (take) an online English course.
4. Last week, I_______ (buy) a book about the places of interest in the USA.
用所给词的适当形式填空
have lived
finished
bought
taking
课后作业
1. Recite the new words and phrases.
2. Revise the difference between the simple past tense and the present perfect tense.
GOOD JOB