8B Unit 6 A Charity Walk (Grammar)

牛津英语8B u6 语法
1 It is +形容词+that 从句（从句中主语是主格）：表示对做某事的评价：某人做某事是------。
It 是形式主语，代替真正的主语that从句。
It is necessary that we train ourselves before the walk.
It is strange that he didn’t come yesterday.
填空：1) It is important _______ you have your own support team.
2) It is sad ____ some people are blind.
2 It is +形容词+to do sth: 表示做某事是---
It 是形式主语，代替真正的主语to do sth
It is meaningful to help others.
It is interesting to read comic books.
填空：1) _____ is difficult ______ ( walk) through 8 country parks.
2) _____ is wrong _______ (copy) other students’ homework.
3 It is +形容词+for sb (宾格) +to do sth: 表示某人做某事是---.
这个结构中的for sb 是不定式to do sth的逻辑主语.
句中的形容词是描述所做的事情, 如: dangerous, important, necessary, impossible, hard, difficult等
It is necessary for us to work hard.
It is useful for him to study computer skills.
填空:1) _____ is hard _____ him _______( pass) the exam.
2) _____ is exciting _______ them ______(see) the pop star.
* it is +adj +that从句 和 it is +adj +for sb to do sth 有时可以互换
1)It is necessary that we train ourselves before the walk.
= it is necessary _____ _____ ______ ______ ourselves before the walk.
2)It is important _____ we must help each other.
= it is important _____ _____ _____ _____ each other.
3)It is necessary______ him to practice speaking English.
= it is necessary _____ _____ must practice speaking English.
4) It is comfortable _____ lily lives in a big flat.
= It is comfortable ____ lily ____ live in a big flat.
4 It is + adj. + of sb. to do sth. 表示某人做某事是---
这个结构中的of sb 是不定式to do sth的逻辑主语.
句中的形容词是表示人物品质或特征，是用来描述人的，如： right, kind, nice, clever, wise, polite, brave, wrong, strong , good, honest, generous , rude, careless…
1) It’s nice ____ you to donate your own money with people in need.
2) It’s generous____ you to share your food with others.
3) It is kind ______you to help me solve the problem.
以上结构可以转换为：
(1) How + adj. + it is + of sb. to do sth.!
How kind it is of you to help me solve the problem!
(2) Sb. + is + adj. + to do sth!
You are kind to help me solve the problem!
5 it 还可代替to do 和 That 从句作形式宾语
Find/make /think it +adj +to do sth Find/ make/think it + adj +that 从句
( ) 1. It's easier _____ than _____.
A. say, do B. to say, to do C. says, does D. saying, doing
( ) 2. It is not _____ to learn Maths well.
A easily B easy C friendly D kindly
( )3. It is important ______ we all _____ to make our city a better place to live in.
A for , help B that , to help C for , to help D that , help
( ) 4. Children find _____ interesting to play computer games.
A. that B. which C. it D. its
( ) 5. Is _____ necessary to complete the design before National Day
A. this B. that C. it D. he
( )6. It's not easy _____ us _____ a foreign language.
A. for; learning B. of; learning C. of; to learn D. for; to learn
( )7. _____ is true that English is used as an international language.
A. There B. This C. That D. It
( )8. Is _____ possible to fly to the moon in a spaceship
A. this B. there C. that D. it
( ) 9. _____ will be good ____some exercise every morning.
A. It ; do B. There ; to do C. Those ; doing D. It ;to do
( ) 10. It's very kind _____ you _____ me..
A. for, helping B. of ,help C. for, to help D. of, to help
( ) 11. _____ that the scientist will give us a talk next month
A. Is true B. Is it true C. It's true D. It's truly
( )12. We think _____ our duty to pay taxes to our government.
A. that B. this C. its D. it
( )13. Do you think it important _____ computer well
A. play B. plays C. to play D. playing
( )14. I don't think _____ possible to master a foreign language without much memory work.
A. this B. that C. its D. it
( )15. _____ important _____ you should finish your homework on time.
A That’s ; that B it’s; that C That’s ; What D It；what
( ) 16.—You failed in the Maths exam.
—Yes。It was too hard ____ me to pass such a hard exam.
A of B for C to D with
( ) 17 —what do you think of tomorrow’s basketball match.
— ___ difficult ______ the match.
A we’re , to win B we’re , winning C it’s , to win D it’s, winning
答案：1-5 B BB C C 6-10 D D D DD 11-15B DC D B 16-17 B C