资源简介

(共32张PPT)
Unit 6
Sunshine for all
Grammar
学习目标
1
2
To master the usage of the following sentence structures:
①It is + adj.+ to-infinitive
②It is + adj.+ for sb + to-infinitive
③It is + adj.+ of sb + to-infinitive.
To use the three sentence structures correctly.
1. It’s fantastic to work as a volunteer!
2. It is really nice of them to give up their spare time to help at the event.
3. It is great for me to do something for them.
What structures are used in these sentences
Lead in
It is + adjective + to-infinitive 做某事是……的
It is + adjective + for sb + to-infinitive 对某人来说做某事是……的
It is + adjective + of sb + to-infinitive 某人做某事真是……
英语中，动词不定式（to do）作主语时，句子易头重脚轻。本句型用It作形式主语，替代真正主语（to do），让句子结构更简洁、表达更自然。其核心作用是表达对事情的看法或对人的评价。
Read the text below and pay attention to the structure of “It is + adjective + to-infinitive”. Then summarise its usage.
Read and summarise
新课讲授
I think it is important to help people in need. Right now, I am volunteering at a school for blind children. It is wonderful to watch them enjoy their lessons. I really think it is a great experience. It is meaningful to work as a volunteer.
It is
adjective
to-infinitive
important
wonderful
meaningful
to help people in need.
to watch them enjoy their lessons.
to work as a volunteer.
It is + adj. + to-infinitive
基础结构：It is + 形容词 + to do sth.
核心解析：It是形式主语，无实际含义
真正主语：后面的动词不定式（to do sth.）
功能：表达对“做某事”的客观看法或评价
形容词特点：描述事情的性质、特点（如难易、好坏）
Summary
例句精讲+结构拆解
1. It is useful to learn a second language.
译文：学习一门第二语言是有用的。
拆解：It（形式主语）+ is useful（表语）+ to learn...（真正主语）
2. It is interesting to play basketball after school.
译文：放学后打篮球很有趣。
拆解：形式主语It替代to play...，避免句子开头过长
易错点提醒
易错1：遗漏形式主语It，直接用to do开头（不常用）
错误：To learn English is important.（语法正确但不自然）
正确：It is important to learn English.
易错2：混淆is的用法，主语是It，be动词用is
错误：It are necessary to exercise every day.
正确：It is necessary to exercise every day.
We use “it is + adjective + to-infinitive” to express what we think about something. We use __________ to refer to the real subject “to-infinitive”.
it
Practice
Amy is thinking about what she can do to help society. Help her use the words in brackets and those in the box to make sentences.
donate give up help visit
________________________________(right/ seats/ the elderly/ to)
It's right to give up seats to the elderly.
_____________________________(good/blind people/cross the road)
It's good to help blind people cross the road.
________________________________(helpful/ money/ to charities)
_____________________________(nice/an old people’s home)
It's helpful to donate money to charities.
It's nice to visit an old people’s home.
A: I think it is important to help our community. What can we do
B: You’re right. It is easy to pick up trash in our local park. We can do that this weekend.
A: Good idea! Also, it is helpful to volunteer at the animal shelter. The dogs there need someone to walk.
B: Yes! And for our classmates, it is useful to share our old books and school supplies with others.
A: Exactly. It is always good to be kind and helpful to others.
Talk with your partner about what you can do to help society, using “it is+adjective+to-infinitive”.
Read and summarise
Read the text below and pay attention to the structure of “It is + adjective + for ... + to-infinitive”. Then summarise its usage.
It is important for blind children to receive an education. So, it is necessary for the government to build special schools for them. I think it is difficult for the teachers to find good ways to teach blind children, but they have done an excellent job!
It is
adjective
someone
important
necessary
difficult
to receive an education.
to build special schools for them.
to find good ways to teach blind children.
for
to-infinitive
blind children
the government
the teachers
It is + adj. + for sb. + to-infinitive
拓展结构：It is + 形容词 + for sb. + to do sth.
核心解析：for sb. 明确“做某事的人”，即动作发出者
功能：描述“对某人来说，做某事是怎样的”
形容词特点：描述事情的客观属性（难易、重要性等）
sb. 用宾格形式（如me, him, them, us）
Summary
常用形容词+例句精讲
常用形容词：important, perfect, great, exciting, easy, difficult, hard, wonderful, possible, interesting, necessary
1. It is difficult for me to finish the work on time.
译文：对我来说，按时完成这项工作很难。
2. It is necessary for students to finish their homework.
译文：对学生来说，完成作业是必要的。
解析：difficult和necessary均描述事情的客观属性
易错点提醒
易错1：for sb. 中sb.用主格（如I, he），错误
错误：It is easy for she to sing this song.
正确：It is easy for her to sing this song.
易错2：形容词用错类型，误用人的品质类形容词
错误：It is kind for him to help others.（kind描述人）
正确：It is kind of him to help others.（改用of）
We can add “_________” in the structure “it is + adjective + to-
Infinitive” to specify who we are talking about.
for sb
Practice
Amy: Why do you want to be a volunteer
Simon: Well, there are lots of people in need, and I believe it’s (1) ________________ to provide help if we can. Charities often raise money for different groups in need, but it’s (2)_________________ to work without the help of volunteers.
Amy: What do you do as a volunteer
Simon: I spend my spare time working with a charity for children without parents.
Amy: Do you need experience
Simon: No. It’s not (3) ____________________ to have any experience,
but it’s (4) _________________to be kind and friendly.
Amy: What are your tasks
Simon: I teach the children songs and play games with them to make them happy. It’s (5) _____________ to make friends with them.
meaningful for us
difficult for them
Simon volunteers at a charity for homeless children. Amy is asking him about his plete their conversation with the phrases in the box.
easy for me difficult for them meaningful for us
important for them necessary for volunteers
necessary for volunteers
important for them
easy for me
I would like to volunteer at a school for blind children, because it is important for blind students to receive education. So it is necessary for volunteers to help them with their study. I think it is meaningful for me to spend time and share knowledge with them.
What kind of organization would you like to volunteer for Why Talk with your partner, using “it is + adjective + for... + to-infinitive”.
Read and summarise
Read the text below and pay attention to the structure of “It is + adjective + of ... + to-infinitive”. Then summarise its usage.
There are also schools for children with other disabilities. It is nice of the government to create special schools like these. It is kind of the teachers to work with these children. The students are also great.
It is
adjective
someone
nice
kind
to create special schools like these.
to work with these children.
of
to-infinitive
the government
the teachers
It is + adj. + of sb. + to-infinitive
拓展结构：It is + 形容词 + of sb. + to do sth.
核心解析：of sb. 用来评价“人的品格、行为”
功能：表达“某人做某事，真是……（品格）”
形容词特点：描述人的主观品质（善良、礼貌、愚蠢等）
sb. 同样用宾格形式，可转换为sb. is + 形容词
Summary
常用形容词+例句精讲
常用形容词：kind, good, nice, clever, right, wrong, polite, rude, silly, helpful, generous
1. It is kind of you to help the old man cross the road.
译文：你帮助老人过马路，真是太善良了。
转换：You are kind to help the old man cross the road.
2. It is silly of him to make such a mistake.
译文：他犯这样的错误，真是太愚蠢了。
易错点提醒
易错1：of sb. 与for sb. 混淆，误用介词
错误：It is polite for her to greet teachers.（polite描述人）
正确：It is polite of her to greet teachers.
易错2：无法转换为sb. is + 形容词，说明用错介词
判断方法：能转换则用of，不能则用for
We can add “_________” in the structure “it is + adjective + to-
Infinitive” to express what we think of someone's actions.
of sb
Practice
Hi Grandma! I’ve decided to volunteer at the Sunshine Care Centre. It’s a home for elderly people. I think it’s (1) _____________________ to provide elderly people with necessary care. It’s (2) ________________________ to send them to the centre since they don’t have enough time to look after the elderly. It’s (3) ___________________ to take care of the elderly people. My mother thinks that it’s (4) __________________ to work there. I’m sure it’ll be a great experience for me.
thoughtful of their families
kind of the workers
helpful of me
nice of the government
Amy has decided to volunteer at a home for elderly people. She tells her grandmother about plete what she says with the words in the boxes below.
helpful of me thoughtful of their families
nice of the government kind of the workers
重点辨析 for sb. vs of sb.
核心区别：形容词描述的对象不同
for sb.：形容词描述“事情”，客观属性（难、重要）
of sb.：形容词描述“人”，主观品质（善良、礼貌）
判断技巧1：看形容词能否用来形容人
判断技巧2：能否转换为“sb. is + 形容词”, 能转换用of，不能转换用for
Further learning
辨析、对比例句（直观区分）
1. It is important for Tom to study hard.（for）
解析：important描述“努力学习”这件事，不能说Tom is important
2. It is good of Tom to study hard.（of）
解析：good描述Tom的品质，可转换为Tom is good
3. It is easy for her to dance.（for）
4. It is clever of her to dance well.（of）
Amy is writing about her first week as a plete her passage below with the words in brackets.
fantastic to spend
It is (1) _________________ (fantastic/spend) time with the elderly. Some of them are so active. It is (2) _________________ (nice/see) them chatting and having fun with the workers. It is (3) ________________________________ (kind/the workers/look after) the elderly carefully and patiently. I think it is (4) ____________________ (necessary/create) more homes like this. Volunteering to help others is great. Everyone should try it.
nice to see
kind of the workers to look after
necessary to create
Practice
Volunteering is very important. It is kind of volunteers to help people in need. It is brave of them to work with disabled children. It is also thoughtful of them to give their time to others. We should all try to be volunteers because it is meaningful to make our world a better place.
Write a short text about the importance of volunteering, using “it is + adjective (+ of/for ...) + to-infinitive”.
课堂总结
It is + adjective + to-infinitive
用来表达对一件事的看法，it 是形式主语，真正的主语是后面的动词不定式。
It is + adjective + for sb. + to-infinitive
用来说明 “对某人来说，做某事是……的”，形容词通常描述事情的性质（如 important, necessary, difficult）。
It is + adjective + of sb. + to-infinitive
用来评价某人的行为，形容词通常描述人的品质（如 patient, brave, kind, thoughtful）。
一、单项选择。
1. — Do you think ______ is possible for them to finish all the work in three hours
— Sorry, I have no idea.
A. that B. this C. its D. it
2. It is clever ______ Mike to think of such a great idea.
A. for B. of C. with D. by
3. Get away from the snake! It is dangerous ______ you to get close to snakes.
A. from B. with C. for D. of
4. — It is ______ of you to make so many mistakes.
— I’m sorry. I will be more careful with my homework.
A. brave B. nice C. impolite D. careless
( )5. — It is ______ for us to learn English well.
— I agree. That helps us communicate with foreign students.
A. important B. importance C. unimportant D. importantly
D
B
C
当堂检测
D
A
二、同义句转换。
1. Simon is kind to help me with my English speaking.
_____ _____ _____ _____ Simon _____ _____ me with my English speaking.
2. To walk to Beijing from Nanjing in two days is impossible for us.
_____ _____ _________ _____ _____ ______ walk to Beijing from Nanjing in two days.
3. Going fishing is interesting.
It is __________ _______ _________ fishing.
4. Henry can answer the question easily.
It ________ _______ ________ Henry ______ _______ the question.
5. Lily is generous. She always shares her toys with her friends.
_____ ______ ________ _____ Lily ______ _____ her toys with her friends.
It is impossible for us to
It is kind of to help
interesting to go
is easy for to answer
It is generous of to share
Homework
Review the grammar we learnt today.
Preview Unit 6 Integration.

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