unit6aclassact课后答案_Unit6Acharitywalk

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unit 6 a charity walk
一、教学内容：
unit 6 a charity walk
grammar
 
二. 教学目标：
掌握unit 6的语法结构和用法：
it’s adj. that clause
it’s adj. to do
it’s adj. for sb. to do
 
经典讲解
now if you are a sports fan, please follow me and look at some funny pictures.
let’s learn ‘it’s adj. …’句型
 
 
read sentences
1. it’s wonderful that i can stay with  mum for some time.
2. it’s impossible that you can kick a goal.
3. it’s necessary to tell girls who i am.
4. it’s important for beckham to kick a goal.
5. it’s funny for the fan to dress as alerting.
讲解一、
it＋is＋形容词＋从句。如：
it 是形式主语，that从句才是真正的主语。如：
it is sad that some people are blind.
it is wrong that we look down on disabled people.
it is necessary that we learn english well.
it is important that you have your own support team.
it is certain that he will come. 他一定会来。
    it’s true that he may fall behind the other students. 他真的可能落后于其他同学。
    it is strange that he should say so. 他居然这么说，真是奇怪。
exercises
1. it is necessary _______________(我们帮助老人)
2. it is sad ___________________(有些人是聋的)
3. it is ________(错误的)that some people______________（看不起） blind people.
4. it is sad that some children in poor countries______________（不能上学）.
keys:
1. that we help the elderly.
2. that some people are deaf.
3. wrong ,look down on
4. can’t go to school
 
【典型例题】
一、用“it is + adj. + that” 连接句子
1. necessary/ we keep our city clean
2. dangerous/ people drive after drinking
3. wrong/ you give the children sweets every day
4. sad/ people in poor countries do not have enough food
5. possible/ we will live on mars in the future
【答案】
1. it’s necessary that we keep our city clean.
2. it’s dangerous that people drive after drinking.
3. it’s wrong that you give the children sweets every day.
4. it’s sad that people in poor countries do not have enough food.
5. it’s possible that we will live on mars in the future.
 
二、用“it is + adj. + that” 翻译句子
1. 我们每天打扫教室有必要吗？
2. 学生认真完成作业非常重要。
3. 真奇怪我爸昨天很早到家了。
4. 你瞧不起无家可归的人是不对的。
5. 我太幸运了，我找到了丢失的钥匙。
6. 她穿着这样的裙子，太滑稽了。
7. 拖着疲惫的身体干活，他们太艰苦了。
8. 你带一张地图很有用。
【答案】
1. is it necessary that we clean the classroom everyday？
2. it is very important that students finish their homework carefully.
3. it is strange that my father got home early yesterday.
4. it is wrong that you look down upon /on the homeless people. 1234
5. it is lucky that i found the lost keys.
6. it is funny that she is wearing such a dress.
7. it is very tough that they work with tired bodies.
8. it is useful that you take a map.
 
讲解二、
it is ＋ adj. ＋ to do。如：
1. it’s meaningful to join the tree-planting club.
2. it is important to keep parks clean.
3. it is easy to give seats to the elderly.
4. it is good to help blind people cross the road.
5. it is helpful to donate money to charities.
6. it is fun to do voluntary work.
7. it is difficult to walk through eight country parks.
8. it is useful to have support teams.
9. it is necessary to learn english well.
 
【典型例题】
用“it is + adj. + to do”连接句子
1. interesting/ on the great wall /walk
2. walk/ on a rainy day/ hard
3. finish/ easy/ the walk
4. before the walk/ necessary/ practice
5. fun/ on the great wall/ the view/ look at
6. to support us/ find/ important/ someone
【答案】
1. it’s interesting to walk on the great wall.
2. it’s hard to walk on a rainy day.
3. it’s easy to finish the walk.
4. it’s necessary to practice before the walk.
5. it’s fun to look at the view on the great wall
6. it’s important to find someone to support us.
讲解三、
it is＋adj. ＋（for sb. ）＋动词不定式短语。
句中的形容词仅仅是描述事物的形容词，如：difficult， easy，hard，important，dangerous…如：
it is interesting to play with snow in winter. 冬季里玩雪是很有趣的。
it’s important for us to keep the water clean. 保持水质清洁对我们来说是很重要的。
it is important for us to support him.
it is meaningful for us to help ben.
it is important for him to learn some computer skills.
it is difficult for joan to finish the work within 10 days.   
 
【典型例题】
一、用it is . . . for sb. to do sth. 转换句型
1. to learn team spirit is an excellent chance for people.
2. to support and help each other before and during the event is necessary for them.
3. to have support teams to bring food and drinks is useful for trailwalkers.
4. to start training a few months before the walk is necessary for you.
【答案】
1. it is an excellent chance for people to learn team spirit.
2. it is necessary for them to support and help each other before and during the event.
3. it is useful for trailwalkers to have support teams to bring food and drinks.
4. it is necessary for you to start training a few months before the walk.
 
二、用“it is + adj. + for sb. to do sth. ” 连接句子
1. good /me/ eat more carrots
2. necessary/ children / sleep/ for eight hours every night
3. useful/everyone/learn/ computer skills1234
4. difficult/ me / understand/ this book
5. important/him/ take /vitamin e
6. it’s/so many/ help /people/in need/nice/others 
7. meaningful/it’s/work/for/orbis/to
8. you can get very hot on the hike. (important/ you/take/lots of water) 
9. ben’s team wants to finish oxfam trailwalker within 30 hours.
(important/him/train/every day)
【答案】
1. it’s good for me to eat more carrots.
2. it’s necessary for children to sleep for eight hours every night.
3. it’s useful for everyone to learn computer skills.
4. it’s difficult for me to understand this book.
5. it’s important for him to take vitamin e.
6. it’s nice for so many people to help others in need.
7. it’s meaningful to work for orbis.
8. you can get very hot on the hike. it’s important for you to take lots of water.
9. ben’s team wants to finish oxfam trailwalker within 30 hours.
it’s important for him to train every day.
 
三、翻译句子
1. 你拥有你自己的后援队很重要。
2. 穿越8个乡村公园很困难。
3. 对于人们而言，学会团队精神是重要的。
4. 在徒步旅行期间天气这么好是很幸运的。
5. 看nba比赛真令人兴奋。
6. 人们独自徒步旅行很危险。他们会遇到麻烦。
【答案】
1. it’s important that you have your own support team(s).
2. it’s very hard to walk through 8 country parks.
3. it’s important for people to learn team spirit.
4. it’s lucky that the weather is pleasant during the hike.  
5. it is exciting to watch nba matches.
6. it is dangerous for people to go hiking alone. they may have some trouble.
补充讲解：
1. it＋is＋形容词＋（for／of sb. ）＋动词不定式短语。
对于这个句型中究竟用 for还是用of，一般遵循这样的规则：
若形容词是描述不定式行为者的性格、品质的，如kind，good，nice，right，wrong，clever，careless，polite，foolish等，用of sb. 。
it’s very kind of you to help me. 你能帮我，真好。
it’s clever of you to work out the maths problem. 你真聪明，解出了这道数学题。
it’s very kind of you to say so. 你这样说真是太好了。
若形容词仅仅是描述事物，不是对不定式行为者的品格进行评价，用for sb. ，这类形容词有difficult，easy，hard，important，dangerous，（im）possible等。
it’s very dangerous for children to cross the busy street.
对孩子们来说，穿过繁忙的街道很危险。
it’s difficult for us to finish the work. 对我们来说，完成这项工作很困难。
it’s important for us to keep the classroom clean. 保持教室干净对我们来说是很重要的。
注意：
of sb. 的句型通常都可转换为不定式作状语的句子，但for sb. 句型不可以。
it’s very nice of you to offer me a seat.
= you are nice to offer me a seat. 十分感谢你给我让座。
it is careless of him to lose so many things. 1234
= he is careless to lose so many things. 他丢了这么多东西，真是太粗心了。
it’s very important for you to practise your oral english in daily life.
在日常生活中练习你的英语口语是非常重要的。
这句话不能说成：it is very important of you to practise…
2. “it’s + 形容词+ ……” 句式中的形容词位置也可换用名词；连系动词be也可换用其它连系动词，如feel等。
如： it’s a good habit to get up early and go to bed early. 早睡早起是好习惯。
it must be great fun to fly to the moon in a spaceship. 乘宇宙飞船飞往月球一定很有趣。
it feels strange to have a twin sister. 有个孪生姐妹感觉很奇怪。
3. it ＋is ＋one’s turn（duty，pleasure） ＋to do sth. 意为“该轮到某人做某事（做某事是某人的责任、愉悦的事）”。如： it’s your turn to be on duty tomorrow. 明天轮到你值日了。
4. 主语＋谓语＋it＋宾语补足语＋动词不定式／动名词／从句。
该句型中宾语补足语可由形容词、名词等充当。如：
he found it not easy to learn a foreign language well. 他发现学好一门外语是不容易的。
we think it no good reading in bed. 我们认为躺在床上看书无益处。
i think it necessary that we have the meeting. 我认为我们开这个会是必要的。
5. the other use of “it”
（1）it has begun to rain/ raining.
（2）what a hard winter it is!
（3）what time is it? it is ten to ten.
（4）it is ten years since i left my hometown.
（5）it is getting dark.
（6）how far is it to the sea? it is a long way from here to the sea.
（7）who is it? it’s me.
（8）whose umbrella is this? it’s mine.
【典型例题】
翻译句子
1. 保持城市整洁是我们大家的职责。
________________________________________________.
2. 每天喝足够的水是必要的。
________________________________________________.
3. 对于盲人来说，独自在超市购物是困难的。
________________________________________________.
4. 每天听新闻是有用的。
________________________________________________.
5现在大多数学生早睡是不可能的。
________________________________________________.
6. 他手中抱着婴儿。那婴儿在哭。
________________________________________________.
7. 到学校有多远？ 一英里左右。
________________________________________________.
8. 很奇怪，他迟到这么久。
________________________________________________.
9. 他不可能在三天内完成这份工作。
________________________________________________.
 
【答案】
1. it’s our duty to keep the city clean and tidy.
2. it is necessary to drink enough water.
3. it is hard for the blind to do shopping in the supermarket alone.
4. it is useful to listen to news every day.
5. it is not possible for most students to go to bed early.
6. he is carrying a baby. it’s crying now.
7. how far is the school? it’s about one mile.
8 it’s strange that he is so late.
9. it’s impossible for him to finish the work in three days.
 
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