【新课标】Unit 4 Natural disaster 第3课时Grammar课件
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| 名称 | 【新课标】Unit 4 Natural disaster 第3课时Grammar课件 |  | |
| 格式 | pptx | ||
| 文件大小 | 5.5MB | ||
| 资源类型 | 试卷 | ||
| 版本资源 | 牛津深圳版 | ||
| 科目 | 英语 | ||
| 更新时间 | 2023-01-12 09:42:39 | ||
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Unit 4 Natural disasters
Period 3 Grammar
牛津深圳·广州版 九年级下
1Understanding the three uses ofitas the empty subject2Use it to refer to the time, season, weather, distance and temperature3Use it to replace a to-infinitiveLearning objectsIt seems/appears that…How many pronouns it can you find
Lead in
What does it refer to
It 指代具体事物 (water)
Lead in
“It”作为形式主语(empty subject)。
13
It 没有指代具体的事物
Lead in
What does it refer to
It 指代具体事物/事件
(water/ many cities would be flooded and disappear)
Lead in
It 没有指代具体的事物。
It 作为形式主语，没有实际语义。
Lead in
28
第二个it 指代具体事物 (work)
第一个It 没有指代具体的事物
Lead in
What does it refer to
“It”作为形式主语，没有实际语义。
We can use it as the empty subject like this:
It is one o’clock.
It is summer now.
It rained all day.
It is only a five-minute walk from my home to the school.
It is hot in this room.
Using it as the empty subject
Presentation
time
season
weather
Presentation
It’s nine o’clock in the morning. My bedroom floor is a pool of water.
A Answer these questions using it as the subject.
It’s hot.
It’s ten o’clock in the morning.
It’s 10 May, 2017.
It’s summer now.
It is about 20-minute walk from my home to the school.
Have a go
B Put the words in the correct order to make meaningful sentences.
It is time for supper now.
It is autumn in Australia now.
It is about five kilometres to the park.
It was windy yesterday.
Have a go
We can also use it as the empty subject of a sentence to
replace a to-infinitive.
It’s important to stick with it.
Presentation
It took a long time to build the house.
It is wrong to pay no attention to Kevin.
It is not a good idea to sit around and worry about the flood.
To build the house took a long time.
To pay no attention to Kevin is wrong.
To sit around and worry about the flood is not a good idea.
In most cases, we use it at the beginning of the sentence as an empty subject to refer to the infinitive.
Presentation
It took a long time to build the house. (To build the house took a long time.)
It takes/took sb. some time to do sth.
从这里走到白云山顶大约要花一小时。
___ ______ about an hour ___ ______ to the top of the Baiyun Mountain from here.
It takes
to walk
Summary
链接中考
It is wrong to pay no attention to Kevin.
(To pay no attention to Kevin is wrong.)
参观广州博物馆对我们很有教育意义。
________ _______ very educational for us _________ ___________ Guangzhou Museum.
It is
to visit
Summary
It is/was adj.(of/for) sb. to do sth.
链接中考
It is not a good idea to sit around and worry about the flood. (To sit around and worry about the flood is not a good idea.)
Summary
It is/was n. to do sth.
When it was time for the villagers _______ to market.
A. go B. going C. to go D. went
C
链接中考
C Write a sentence using it and a to-infinitive under each picture below.
It is important to stay calm when there is a fire.
It is dangerous to start a fire in the forest.
Have a go
It is a good idea to take an umbrella.
It is nice to have a picnic in the park.
Have a go
We can also use it as the empty subject in the following sentence pattern:
It seems/appears that …
Presentation
Use it as the empty subject of a sentence to replace a sentence.
D Put the words in brackets in the correct order to complete the conversations.
It seems that a typhoon is coming.
It appears that the flight has been cancelled.
It seems that something bad has happened to her.
Have a go
1. I dropped my watch and it broke.
it用于上文提到的情况
2. Is it a boy or a girl
it 指性别不明的婴儿或用于确认某人的身份
3. It’s too late to go there now.
It rained all day yesterday.
it 用于指时间、距离、价值、天气等自然现象
4. I find it difficult to do the job well.
it用作形式宾语
Extension
用It作形式主语放到句首， 指代动词不定式，动词的ing形式和主语从句，通常把它们放在谓语动词后，常见句型有：
Summary
It作形式主语常见句型
1. It + 动词 +形容词/名词/过去分词/不及物动+主语从句
It is uncertain whether he can come back or not.
这类不及物动词有: appear, happen, seem等。
It is a question that whether he will come.
Summary
这类名词有a pleasure, a fact, a pity, a shame, an honour, a question等。
这类名词有announced, believed, said, reported, expected, hoped, decided, shown等。
It is reported that 16 people were killed in the flood.
It seemed that he didn’t tell the truth.
2. It + be + adj./n. + (for sb.) + to do sth.
Summary
It’s necessary for the young to learn Chinese well.
It is time for you to go to bed.
此处形容词是描述事物的特性。用于此句型的形容词有: easy, hard, difficult, possible, bad, good, important, necessary, exciting, interesting等。
3. It + be + adj. + of sb. + to do sth.
Summary
It’s wise of Linda to make up her mind to to learn an instrument.
这个句型是易丢分句型，此处形容词是描述人的品德、特征。用于此句型的形容词有：kind, nice, wise, polite, friendly, foolish, clever, rude, impolite, cruel等。
4. It + takes ( sb )+ 时间（金钱）+ to do sth.
Summary
It took the workers three years to finish building the tower.
Summary
( ) 1. In fact ____ is a hard job for the police to keep order
in an important football match.
A. this B. that C. there D. it
( ) 2. ____ is a fact that English is being accepted as an
international language.
A. There B. This C. That D. It
D
D
一、选择最佳答案填空。
Exercise
( ) 3. Is ___ necessary to take off our shoes when we enter the lab
A. everyone B. this C. her D. it
( ) 4. ____ will take you a lot of time to find him in the crowd.
A. It B. I C. We D. They
( ) 5. It is no use ____ there, the situation is hopeless now.
A. to go B. to be going
C. going D. having gone
D
A
A
Exercise
( ) 7. It is never too late to learn, ____
A. is it B. isn’t it C. does it D. doesn’t it
( ) 8. ___ is known to all that Shenzhou VI launched successfully.
A. As B. What C. It D. That
( ) 9. ____ is reported in the newspaper, the Earthquake in East
China's Jiangxi Province killed 13 people.
A. It B. As C. That D. What
A
C
A
Exercise
1. 细嚼慢咽是个好习惯。
______ _____ a good habit ____ ______ slowly.
2. 我其中一个计划是明年在广州买一套房子。
One of my plans _____ _____ _____ a flat in Guangzhou next year.
3. 他们花了九年的时间建成港珠澳大桥。
____ ______ them nine years ___ ______ the Hong Kong-Zhuhai-Macau Bridge.
4. 在一天之内收集那么多书是不可能的。
___ ___ impossible ____ _______ so many books in one day.
It is to eat
is to buy
It took to built
二、根据中文意思完成句子
It is to collect
Exercise
Homework
Finish Grammar exercise paper.
Nature will not deceive us. It is often ourselves who deceive us.
Reflection
谢谢
21世纪教育网（www.21cnjy.com)
中小学教育资源网站
兼职招聘：
https://www.21cnjy.com/recruitment/home/admin
Unit 4 Natural disasters
Period 3 Grammar
牛津深圳·广州版 九年级下
1Understanding the three uses ofitas the empty subject2Use it to refer to the time, season, weather, distance and temperature3Use it to replace a to-infinitiveLearning objectsIt seems/appears that…How many pronouns it can you find
Lead in
What does it refer to
It 指代具体事物 (water)
Lead in
“It”作为形式主语(empty subject)。
13
It 没有指代具体的事物
Lead in
What does it refer to
It 指代具体事物/事件
(water/ many cities would be flooded and disappear)
Lead in
It 没有指代具体的事物。
It 作为形式主语，没有实际语义。
Lead in
28
第二个it 指代具体事物 (work)
第一个It 没有指代具体的事物
Lead in
What does it refer to
“It”作为形式主语，没有实际语义。
We can use it as the empty subject like this:
It is one o’clock.
It is summer now.
It rained all day.
It is only a five-minute walk from my home to the school.
It is hot in this room.
Using it as the empty subject
Presentation
time
season
weather
Presentation
It’s nine o’clock in the morning. My bedroom floor is a pool of water.
A Answer these questions using it as the subject.
It’s hot.
It’s ten o’clock in the morning.
It’s 10 May, 2017.
It’s summer now.
It is about 20-minute walk from my home to the school.
Have a go
B Put the words in the correct order to make meaningful sentences.
It is time for supper now.
It is autumn in Australia now.
It is about five kilometres to the park.
It was windy yesterday.
Have a go
We can also use it as the empty subject of a sentence to
replace a to-infinitive.
It’s important to stick with it.
Presentation
It took a long time to build the house.
It is wrong to pay no attention to Kevin.
It is not a good idea to sit around and worry about the flood.
To build the house took a long time.
To pay no attention to Kevin is wrong.
To sit around and worry about the flood is not a good idea.
In most cases, we use it at the beginning of the sentence as an empty subject to refer to the infinitive.
Presentation
It took a long time to build the house. (To build the house took a long time.)
It takes/took sb. some time to do sth.
从这里走到白云山顶大约要花一小时。
___ ______ about an hour ___ ______ to the top of the Baiyun Mountain from here.
It takes
to walk
Summary
链接中考
It is wrong to pay no attention to Kevin.
(To pay no attention to Kevin is wrong.)
参观广州博物馆对我们很有教育意义。
________ _______ very educational for us _________ ___________ Guangzhou Museum.
It is
to visit
Summary
It is/was adj.(of/for) sb. to do sth.
链接中考
It is not a good idea to sit around and worry about the flood. (To sit around and worry about the flood is not a good idea.)
Summary
It is/was n. to do sth.
When it was time for the villagers _______ to market.
A. go B. going C. to go D. went
C
链接中考
C Write a sentence using it and a to-infinitive under each picture below.
It is important to stay calm when there is a fire.
It is dangerous to start a fire in the forest.
Have a go
It is a good idea to take an umbrella.
It is nice to have a picnic in the park.
Have a go
We can also use it as the empty subject in the following sentence pattern:
It seems/appears that …
Presentation
Use it as the empty subject of a sentence to replace a sentence.
D Put the words in brackets in the correct order to complete the conversations.
It seems that a typhoon is coming.
It appears that the flight has been cancelled.
It seems that something bad has happened to her.
Have a go
1. I dropped my watch and it broke.
it用于上文提到的情况
2. Is it a boy or a girl
it 指性别不明的婴儿或用于确认某人的身份
3. It’s too late to go there now.
It rained all day yesterday.
it 用于指时间、距离、价值、天气等自然现象
4. I find it difficult to do the job well.
it用作形式宾语
Extension
用It作形式主语放到句首， 指代动词不定式，动词的ing形式和主语从句，通常把它们放在谓语动词后，常见句型有：
Summary
It作形式主语常见句型
1. It + 动词 +形容词/名词/过去分词/不及物动+主语从句
It is uncertain whether he can come back or not.
这类不及物动词有: appear, happen, seem等。
It is a question that whether he will come.
Summary
这类名词有a pleasure, a fact, a pity, a shame, an honour, a question等。
这类名词有announced, believed, said, reported, expected, hoped, decided, shown等。
It is reported that 16 people were killed in the flood.
It seemed that he didn’t tell the truth.
2. It + be + adj./n. + (for sb.) + to do sth.
Summary
It’s necessary for the young to learn Chinese well.
It is time for you to go to bed.
此处形容词是描述事物的特性。用于此句型的形容词有: easy, hard, difficult, possible, bad, good, important, necessary, exciting, interesting等。
3. It + be + adj. + of sb. + to do sth.
Summary
It’s wise of Linda to make up her mind to to learn an instrument.
这个句型是易丢分句型，此处形容词是描述人的品德、特征。用于此句型的形容词有：kind, nice, wise, polite, friendly, foolish, clever, rude, impolite, cruel等。
4. It + takes ( sb )+ 时间（金钱）+ to do sth.
Summary
It took the workers three years to finish building the tower.
Summary
( ) 1. In fact ____ is a hard job for the police to keep order
in an important football match.
A. this B. that C. there D. it
( ) 2. ____ is a fact that English is being accepted as an
international language.
A. There B. This C. That D. It
D
D
一、选择最佳答案填空。
Exercise
( ) 3. Is ___ necessary to take off our shoes when we enter the lab
A. everyone B. this C. her D. it
( ) 4. ____ will take you a lot of time to find him in the crowd.
A. It B. I C. We D. They
( ) 5. It is no use ____ there, the situation is hopeless now.
A. to go B. to be going
C. going D. having gone
D
A
A
Exercise
( ) 7. It is never too late to learn, ____
A. is it B. isn’t it C. does it D. doesn’t it
( ) 8. ___ is known to all that Shenzhou VI launched successfully.
A. As B. What C. It D. That
( ) 9. ____ is reported in the newspaper, the Earthquake in East
China's Jiangxi Province killed 13 people.
A. It B. As C. That D. What
A
C
A
Exercise
1. 细嚼慢咽是个好习惯。
______ _____ a good habit ____ ______ slowly.
2. 我其中一个计划是明年在广州买一套房子。
One of my plans _____ _____ _____ a flat in Guangzhou next year.
3. 他们花了九年的时间建成港珠澳大桥。
____ ______ them nine years ___ ______ the Hong Kong-Zhuhai-Macau Bridge.
4. 在一天之内收集那么多书是不可能的。
___ ___ impossible ____ _______ so many books in one day.
It is to eat
is to buy
It took to built
二、根据中文意思完成句子
It is to collect
Exercise
Homework
Finish Grammar exercise paper.
Nature will not deceive us. It is often ourselves who deceive us.
Reflection
谢谢
21世纪教育网（www.21cnjy.com)
中小学教育资源网站
兼职招聘：
https://www.21cnjy.com/recruitment/home/admin