Unit 4 Natural disasters Lesson4 Grammar课件(共47张PPT)
文档属性
| 名称 | Unit 4 Natural disasters Lesson4 Grammar课件(共47张PPT) |  | |
| 格式 | pptx | ||
| 文件大小 | 19.8MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 牛津深圳版 | ||
| 科目 | 英语 | ||
| 更新时间 | 2022-06-02 18:07:00 | ||
图片预览
文档简介
(共47张PPT)
Unit 4 Natural disasters
Lesson 4 Grammar
学习目标
通过这节课的学习，你将能做到以下几点：
1.理解it作为形式主语的三种用法；
2.适当运用it作为形式主语作一个天气报告；
3.树立安全意识，增强防风避险能力。
How many pronouns it
What’s the meaning of it
It 指代具体事物 (water)
“It”作为形式主语(empty subject)。
13
It 没有指代具体的事物
What’s the meaning of it
What’s an empty subject
Is raining.
It is raining.
“It”作为形式主语，没有实际语义。
缺乏主语。
Tell the meanings of it.
It 指代具体事物/事件
(water/ many cities would be flooded and disappear)
Tell the meanings of it.
It 没有指代具体的事物。
It 作为形式主语，没有实际语义。
28
“It”作为形式主语，没有实际语义。
第二个it 指代具体事物 (work)
第一个It 没有指代具体的事物
Tell the meanings of it.
“It” 作为形式主语，
没有具体语义。
“It” 用于指代具体事物
Have you ever experienced a flood in Guangzhou
Typhoon landings in China in the past 70 years
↓
more than 250 times in Guangdong
17 times
Typhoon affects our daily lives.
Ben and Jane are planning to go camping with their friends this weekend. But...
Ben and Jane
camping
Listen to a conversation and answer the questions.
1. What’s the time now
2. What is the weather like today
3. What is the season
4. What is the temperature
5. How far away is the typhoon from them
It’s six o’clock.
It’s rainy.
It’s autumn.
It’s 24 degrees centigrade.
It’s about 200 km.
Ben and Jane
It’s six o’clock.
It’s rainy.
It’s autumn.
It’s about 200 km away from them.
It’s 24 degrees centigrade .
用法1：it作形式主语表示时间、季节、天气、距离或温度
time
weather
season
1. What is the time now
2. What is the weather like today
3. What is the season now
Let’s have a try.
It’s 2 o’clock in the afternoon.
It’s Sunny out there.
It’s spring.
P56 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.
There are many dark clouds, and the wind is blowing strongly.
Ben and Jane are upset because the typhoon makes them cancel the camping.
It appears that a rainstorm is coming.
It seems that he is not happy with the cancellation.
Ben is frowning.
取消 n.
形式主语
用法2：it作形式主语用于It seems/appears that...的句型
我们常使用带“形式主语it”的结构，将充当主语的从句移到句末。
It appears that a rainstorm is coming.
It seems that he is not happy with the weather.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
真正的主语
It seems that he is not happy with the cancellation.
What should I do now
It seems that they will take a rain check.
Ben makes a new plan for the camping.
1 sunny/will be/it/next Saturday
____________________________________
2 about thirty kilometres/it/is/to the campground
____________________________________
3 they will/seems/it/have so much fun/that
_____________________________________
It will be sunny next Saturday.
It is about thirty kilometres to the campground.
It seems that they will have so much fun.
Let’s have a try.
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.
I heard that she lost her purse.
How can we stay safe during a typhoon
It is important to stay calm.
=To stay calm is important.
It is dangerous to stand under a tree.
=To stand under a tree is dangerous.
How can we stay safe during a typhoon
thunderstorm
It is a good idea to stay at home.
=To stay at home is a good idea.
How can we stay safe during a typhoon
It is important to stay calm. =To stay calm is important.
It is dangerous to stand under a tree. =To stand under a tree is dangerous.
It is a good idea to stay at home. =To stay at home is a good idea.
当句子的主语是动词不定式短语时，动词不定式短语一般不放在句首，而通常用it来作为句子的开头，动词不定式短语则放在句末。
用法3：It作形式主语代替to do
Give some advice to Jane by using
It is + adj. + to do sth.
food, water, survival kit/prepare/necessary
the weather updates/important/listen to
now/the beach/go to/silly
flower pots/good idea/bring in
It’s necessary to prepare enough water, food and a survival kit.
water, food, a survival kit/prepare/necessary
the weather updates/important/listen to
It’s important to listen to weather updates.
flower pots/good idea/bring in
It’s a good idea to bring in the flower pots.
It’s silly to go to the beach now.
now/the beach/go to/silly
We can also say...
It’s necessary (for you) to prepare enough water, food and a survival kit.
It’s important (for you) to listen to the weather updates.
It’s silly (of you) to go to the beach now.
What are the differences
It’s necessary for you to prepare enough water, food and a survival kit.
It’s important for you to listen to weather updates.
It’s silly of you to go to the beach now.
形容词
介词
It is + 形容词 + (for sb.) + to do sth.句型通常与表达
必要性(necessary)、重要性(important)、危险性(dangerous)及
可能性(impossible)等的形容词连用。
It’s necessary (for you) to prepare enough water, food and a survival kit.
It’s important (for you) to listen to weather updates.
It is dangerous (for us) to stand under a tree.
It is impossible (for Ben) to go camping this weekend.
拓展1：It is + 形容词 + for sb. + to do sth.句型
convenient 方便的 difficult 困难的 easy 容易的 hard 困难的
possible 可能的 safe 安全的 unsafe 不安全的 educational 有教育意义的
It’s silly (of you) to go to the beach now.
It is thoughtful (of you) to turn off power, gas and water.
It is sensible (of Ben) to take a rain check.
generous 大方的 kind 善良的 mean 刻薄的 nice 和善的
polite 有礼的 rude 粗鲁的 brave 勇敢的 cruel 残忍的
拓展2：It is + 形容词 + of sb. + to do sth.句型
It is + 形容词 + (of sb.) + to do sth.句型通常与描述人物品格
的形容词连用。
拓展3：It is + 名词/名词短语 +(for sb.)+ to do sth.句型
It’s time for me to study.
It’s a good idea to bring in the flower pots.
It’s a (great) pleasure for us to have you here.
It was an exciting movie to watch.
Let’s have a try.
1. 台风来之前做一个计划是很重要的。
_______ _______ very importan for us _______ _______ a plan before the typhoon comes.
2. 刮台风的时候远离窗户是个好主意。
It _______ _______ _______ _______ to stay away from the windows during a typhoon.
3. --妈妈，为什么我们不能喝水龙头的水？
--台风之后自来水似乎被污染了。
--Why can’t we drink the tap water, mum
--_______ _________________ _______ the water is polluted after the typhoon.
It is
to make
is a good idea
It seems/appears that
Hello, everyone. It is _________________________________________
Speaking
假如你是学校英语电台的主播，请你播报今天的天气，并给予防御建议。
Safety tips
Hello, everyone. It’s May 21, 2022. This is Ann. And here is today’s weather outlook in Guangzhou. First, let’s see what the weather is like today. It’s rainy all day today. And it is also quite windy. The temperature is twenty degrees centigrade. It seems that a typhoon is about to come. I suggest you should stay calm. It’s necessary for you to prepare enough water, food and a survival kit. Do remember to monitor the weather updates. It’s a good idea to take a rain check for outdoor activities such as camping or going to the beach. Life is precious, please stay safe during typhoons.
林安儿
Life is precious! We must be careful!
Summary & Assessment
通过这节课的学习，你能做到以下几点：
1.理解it作为形式主语的三种用法；
2.适当运用it作为形式主语的句式作一个报告；
3.树立安全意识，增强防风避险能力。
Make a poster on
How To Stay Safe During Typhoons.
Homework
Thank you!
Unit 4 Natural disasters
Lesson 4 Grammar
学习目标
通过这节课的学习，你将能做到以下几点：
1.理解it作为形式主语的三种用法；
2.适当运用it作为形式主语作一个天气报告；
3.树立安全意识，增强防风避险能力。
How many pronouns it
What’s the meaning of it
It 指代具体事物 (water)
“It”作为形式主语(empty subject)。
13
It 没有指代具体的事物
What’s the meaning of it
What’s an empty subject
Is raining.
It is raining.
“It”作为形式主语，没有实际语义。
缺乏主语。
Tell the meanings of it.
It 指代具体事物/事件
(water/ many cities would be flooded and disappear)
Tell the meanings of it.
It 没有指代具体的事物。
It 作为形式主语，没有实际语义。
28
“It”作为形式主语，没有实际语义。
第二个it 指代具体事物 (work)
第一个It 没有指代具体的事物
Tell the meanings of it.
“It” 作为形式主语，
没有具体语义。
“It” 用于指代具体事物
Have you ever experienced a flood in Guangzhou
Typhoon landings in China in the past 70 years
↓
more than 250 times in Guangdong
17 times
Typhoon affects our daily lives.
Ben and Jane are planning to go camping with their friends this weekend. But...
Ben and Jane
camping
Listen to a conversation and answer the questions.
1. What’s the time now
2. What is the weather like today
3. What is the season
4. What is the temperature
5. How far away is the typhoon from them
It’s six o’clock.
It’s rainy.
It’s autumn.
It’s 24 degrees centigrade.
It’s about 200 km.
Ben and Jane
It’s six o’clock.
It’s rainy.
It’s autumn.
It’s about 200 km away from them.
It’s 24 degrees centigrade .
用法1：it作形式主语表示时间、季节、天气、距离或温度
time
weather
season
1. What is the time now
2. What is the weather like today
3. What is the season now
Let’s have a try.
It’s 2 o’clock in the afternoon.
It’s Sunny out there.
It’s spring.
P56 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.
There are many dark clouds, and the wind is blowing strongly.
Ben and Jane are upset because the typhoon makes them cancel the camping.
It appears that a rainstorm is coming.
It seems that he is not happy with the cancellation.
Ben is frowning.
取消 n.
形式主语
用法2：it作形式主语用于It seems/appears that...的句型
我们常使用带“形式主语it”的结构，将充当主语的从句移到句末。
It appears that a rainstorm is coming.
It seems that he is not happy with the weather.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
真正的主语
It seems that he is not happy with the cancellation.
What should I do now
It seems that they will take a rain check.
Ben makes a new plan for the camping.
1 sunny/will be/it/next Saturday
____________________________________
2 about thirty kilometres/it/is/to the campground
____________________________________
3 they will/seems/it/have so much fun/that
_____________________________________
It will be sunny next Saturday.
It is about thirty kilometres to the campground.
It seems that they will have so much fun.
Let’s have a try.
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.
I heard that she lost her purse.
How can we stay safe during a typhoon
It is important to stay calm.
=To stay calm is important.
It is dangerous to stand under a tree.
=To stand under a tree is dangerous.
How can we stay safe during a typhoon
thunderstorm
It is a good idea to stay at home.
=To stay at home is a good idea.
How can we stay safe during a typhoon
It is important to stay calm. =To stay calm is important.
It is dangerous to stand under a tree. =To stand under a tree is dangerous.
It is a good idea to stay at home. =To stay at home is a good idea.
当句子的主语是动词不定式短语时，动词不定式短语一般不放在句首，而通常用it来作为句子的开头，动词不定式短语则放在句末。
用法3：It作形式主语代替to do
Give some advice to Jane by using
It is + adj. + to do sth.
food, water, survival kit/prepare/necessary
the weather updates/important/listen to
now/the beach/go to/silly
flower pots/good idea/bring in
It’s necessary to prepare enough water, food and a survival kit.
water, food, a survival kit/prepare/necessary
the weather updates/important/listen to
It’s important to listen to weather updates.
flower pots/good idea/bring in
It’s a good idea to bring in the flower pots.
It’s silly to go to the beach now.
now/the beach/go to/silly
We can also say...
It’s necessary (for you) to prepare enough water, food and a survival kit.
It’s important (for you) to listen to the weather updates.
It’s silly (of you) to go to the beach now.
What are the differences
It’s necessary for you to prepare enough water, food and a survival kit.
It’s important for you to listen to weather updates.
It’s silly of you to go to the beach now.
形容词
介词
It is + 形容词 + (for sb.) + to do sth.句型通常与表达
必要性(necessary)、重要性(important)、危险性(dangerous)及
可能性(impossible)等的形容词连用。
It’s necessary (for you) to prepare enough water, food and a survival kit.
It’s important (for you) to listen to weather updates.
It is dangerous (for us) to stand under a tree.
It is impossible (for Ben) to go camping this weekend.
拓展1：It is + 形容词 + for sb. + to do sth.句型
convenient 方便的 difficult 困难的 easy 容易的 hard 困难的
possible 可能的 safe 安全的 unsafe 不安全的 educational 有教育意义的
It’s silly (of you) to go to the beach now.
It is thoughtful (of you) to turn off power, gas and water.
It is sensible (of Ben) to take a rain check.
generous 大方的 kind 善良的 mean 刻薄的 nice 和善的
polite 有礼的 rude 粗鲁的 brave 勇敢的 cruel 残忍的
拓展2：It is + 形容词 + of sb. + to do sth.句型
It is + 形容词 + (of sb.) + to do sth.句型通常与描述人物品格
的形容词连用。
拓展3：It is + 名词/名词短语 +(for sb.)+ to do sth.句型
It’s time for me to study.
It’s a good idea to bring in the flower pots.
It’s a (great) pleasure for us to have you here.
It was an exciting movie to watch.
Let’s have a try.
1. 台风来之前做一个计划是很重要的。
_______ _______ very importan for us _______ _______ a plan before the typhoon comes.
2. 刮台风的时候远离窗户是个好主意。
It _______ _______ _______ _______ to stay away from the windows during a typhoon.
3. --妈妈，为什么我们不能喝水龙头的水？
--台风之后自来水似乎被污染了。
--Why can’t we drink the tap water, mum
--_______ _________________ _______ the water is polluted after the typhoon.
It is
to make
is a good idea
It seems/appears that
Hello, everyone. It is _________________________________________
Speaking
假如你是学校英语电台的主播，请你播报今天的天气，并给予防御建议。
Safety tips
Hello, everyone. It’s May 21, 2022. This is Ann. And here is today’s weather outlook in Guangzhou. First, let’s see what the weather is like today. It’s rainy all day today. And it is also quite windy. The temperature is twenty degrees centigrade. It seems that a typhoon is about to come. I suggest you should stay calm. It’s necessary for you to prepare enough water, food and a survival kit. Do remember to monitor the weather updates. It’s a good idea to take a rain check for outdoor activities such as camping or going to the beach. Life is precious, please stay safe during typhoons.
林安儿
Life is precious! We must be careful!
Summary & Assessment
通过这节课的学习，你能做到以下几点：
1.理解it作为形式主语的三种用法；
2.适当运用it作为形式主语的句式作一个报告；
3.树立安全意识，增强防风避险能力。
Make a poster on
How To Stay Safe During Typhoons.
Homework
Thank you!