1. Unit 4 Do It Yourself
study skills

2. Watch a video
It`s uncommon and unusual.

3. The baby is not happy, he is unhappy.

4. The boy is not healthy, he is unhealthy.

5. The room is not tidy, it`s untidy.

6. Practise
选词填空：
1. Some people are ___________ ( friendly, unfriendly) to birds. They throw stones to them.
2. Some people feel _________ (happy, unhappy) that government give poor people such small and _____________(comfortable, uncomfortable) flats.
3. It is _______ (safe, unsafe) to walk alone on the street at night.
4. We should keep students staying away from the ________ (healthy, unhealthy) books.
unfriendly
unhappy
uncomfortable
unsafe
unhealthy

7. “un-” Opposites(反义词) unfriendly friendly  happy  comfortable 
safe 
healthy 
unfriendly
unhappy
“un-”
uncomfortable
unsafe
unhealthy
certain 
common 
important 
interesting 
uncertain
uncommon
unimportant
uninteresting

8. “im-” opposites （反义词） polite  possible  patient  impatient
If someone shows good manners to others, he is a polite person.
If someone does not show good manners to others, he is not polite.
If someone does not show good manners to others, he is_________.
impolite
polite 
possible 
patient 
impolite
“im-”
impossible
impatient

9. Opposites(反义词) “in-” expensive  inexpensive correct  active 
1. This coat is very expensive. It costs 1000 yuan.
But that coat is not expensive. That is ___________
inexpensive.
expensive 
correct 
active 
inexpensive
incorrect
“in-”
inactive

10. 用所给词的适当形式填空：important, happy, able, necessary, correct, possible, common
You will be_____ to pass the exam if you don’t study hard.
There are lots of _________ kinds of birds in Zhalong.
It is ___________ to give our students an exam once a week.
It is wrong for many youny people to think learing Chinese is ___________
He feels _________ because he lost his wallet.
There are some mistakes in his homework, it`s ___________.
It is __________ to finish so much work in such short time.
unable
uncommon
unnecessary
unimportant
unhappy
incorrect
impossible

11. Do you know the negative prefixes?
1. un----
2. im----
3. in-----
最常用的前缀
常用在以‘m/ p’ 开头的词前
常用在以‘c’开头的词前

12. opposites certain important comfortable interesting welcome common
friendly
uncertain
unimportant
uncomfortable
uninteresting
unwelcome
uncommon
unfriendly
able
necessary
active
correct
possible
polite
patient
unable
unnecessary
inactive
incorrect
impossible
impolite
impatient

13. 头脑风暴 ： Competition
Each student in a group writes down the words on the exercise books as many as possible in a minute, then check them on the blackboard. Let`s find out who does it better. (一分钟内小组中每个学生尽可能多地写下形容词的反义词，看看哪个最厉害？）

14. 头脑风暴 ：Let's try together!
1.___possible ___able ___tidy
2. ___polite ___safe ___usual
3. ___patient ___friendly ___ certain
4. ___proper ___happy ___comfortable
5. ___correct ___healthy ___important
6. ___active ___kind ___interesting
7. ___direct ___ lucky ___necessary
8. ___complete ___pleasant ___common

15. 头脑风暴 ：Let's try together!
1.__im_possible __un_able un___tidy
2. _im__polite __un_safe _un__usual
3. _im__patient _un__friendly _un__ certain
4. _im__proper _un__happy _uncomfortable
5. _in_correct __un_healthy _un__important
6. _in__active _un__kind _un__interesting
7. _in_direct _un__ lucky __un_necessary
8. __in_complete _un__pleasant __un_common

16. Good job!

17. 乘胜追击：Exercises
1 Annie：Do you spend a lot of time doing outdoor sports?
Simon: Sure. It`s usual for me to stay at home all day.
2 Sandy: Our neighbour next door is putting something on the wall.
Mum: It`s possible to sleep with all that noise.
unusual
impossible

18. 乘胜追击： Exercises 3 Millie: Are you able to fix your bicycle, Andy?
Andy: No. I`m certain that I can fix it myself.
4 Mum: Suzy, your room is really tidy—things are all over the floor.
Suzy: Sorry, Mum. I`ll tidy up (整理)right now.
uncertain
untidy

19. Let`s act out the dialogues in pairs.
Activity:
Let`s act out the dialogues
in pairs.

20. Adding: “dis-” dishonest
I don’t believe what he says, because he is not honest.
I don’t believe what he says, because he is _________.
dishonest
“dis-”
dishonest

21. Adding: “ir-” regular  irregular
These desks are not regular. Please put these irregular desks in order.
“ir-”
regular 
irregular

22. Homework: 1.Finish off the exercises.
2.Copy the new words three times.