1、,Unit 4 Do It Yourself,study skills,Check your homework,1. 请用剪刀剪出一个老虎。(cut out) Please cut out a tiger with a pair of scissors. 2. 我建议我爸爸戒烟。(give up doing) I advised my father to give up smoking. 3. 看着图然后尽量说出另一面有什么。 Look at the picture and try to say what is on the other side. 4. 剪刀是危险的。你最好不要玩弄他们。 (
2、can, had better not) Scissors can be dangerous. Youd better not play with them.,5. 你最好不要不看题目就做作业。 (had better not) Youd better not do your homework without reading the questions. 6. 你不应该看那么多电视。(shouldnt) You shouldnt watch so much TV. 7. 不要在课堂上大声喧哗，好吗？ Dont make much noise in class, will you? 8. 让我们
3、去北京旅游吧，好吗？(let) Lets go on a trip to Beijing, shall we?,the prefixesun-, in- and im-,The baby is not happy. He is unhappy.,The boy is not healthy. He is unhealthy. zxxk,The room is not tidy Its untidy.,The book is not interesting. Its uninteresting.,Practise,选词填空： 1. Some people are _ ( friendly, un
4、friendly) 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, unhe
5、althy) books.,unfriendly,unhappy,uncomfortable,unsafe,unhealthy,Opposites(反义词),friendly happy comfortable safe healthy ,unhealthy,un-,certain common important interesting ,uninteresting,unfriendly,unhappy,uncomfortable,unsafe,uncertain,uncommon,unimportant,Tom often says hello to his teachers. He is
6、 very polite. Alice never says hello to her teachers. She is very _.,polite possible patient ,impatient,im-,impolite,impolite,impossible,Prefix im-,1. This coat is very expensive. It costs 1000 yuan. That coat is not expensive. That is _,expensive correct active ,inexpensive,in-,inexpensive.,incorre
7、ct,inactive,Prefix in-,You will be _ to pass the exam if you dont study hard. (able) Something _ last in the forest. (usual) It is _ to give our students an exam once a week. (necessary) It is wrong for many youny people to think learing Chinese is _. (important) He feels _ because he lost his walle
8、t. (happy) There are some mistakes in his homework, its _. (correct) It is _ to finish so much work in such short time. (possible),unable,unusual,unnecessary,unimportant,unhappy,incorrect,impossible,用所给词的适当形式填空：,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,Do you know the negative prefixes?
9、,certain important comfortable interesting welcome common friendly,able necessary active correct possible polite patient,uncertain unimportant uncomfortable uninteresting unwelcome uncommon unfriendly,unable unnecessary inactive incorrect impossible impolite impatient,opposites,头脑风暴 ：Lets try togeth
10、er!,1._possible 9. _able 17. _tidy 2. _polite 10. _safe 18. _usual 3. _patient 11. _friendly 19. _ certain 4. _proper 12. _happy 20. _comfortable 5. _correct 13. _healthy 21. _important 6. _active 14. _kind 22. _interesting 7. _direct 15. _ lucky 23. _necessary 8. _complete 16. _pleasant 24. _common
11、,头脑风暴 ：Lets try together!,1._im_possible 9. _un_able 17. un_tidy 2. _im_polite 10. _un_safe 18. _un_usual 3. _im_patient 11. _un_friendly 19. _un_ certain 4. _im_proper 12. _un_happy 20. _uncomfortable 5. _in_correct 13. _un_healthy 21. _un_important 6. _in_active 14. _un_kind 22. _un_interesting 7.
12、 _in_direct 15. _un_ lucky 23. _un_necessary 8. _in_complete 16. _un_pleasant 24. _un_common,1 Annie：Do you spend a lot of time doing outdoor sports?Simon: Sure. Its usual for me to stay at home all day.2 Sandy: Our neighbour next door is putting something on the wall.Mum: Its possible to sleep with
13、 all that noise.,unusual,Impossible zx，xk,Exercises,3 Millie: Are you able to fix your bicycle, Andy?Andy: No. Im certain that I can fix it myself.4 Mum: Suzy, your room is really tidythings are all over the floor.Suzy: Sorry, Mum. Ill tidy up (整理)right now.,uncertain,untidy,Exercises,I dont believe what he says, because he is not honest.,I dont believe what he says, because he is _.,dishonest,dishonest,“dis-”,Adding:,These desks are not regular. Please put these irregular desks in order.,regular ,irregular,“ir-”,Adding:,Homework: 1.Finish off the exercises. 2.Copy the new words three times.,