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1、Unit 4 Do It Yourself Check your homework1. 請用剪刀剪出一個(gè)老虎。請用剪刀剪出一個(gè)老虎。(cut out)Please cut out a tiger with a pair of scissors.2. 我建議我爸爸戒煙。我建議我爸爸戒煙。(give up doing)I advised my father to give up smoking.3. 看著圖然后盡量說出另一面有什么?？粗鴪D然后盡量說出另一面有什么。Look at the picture and try to say what is on the other side.4. 剪刀是危

2、險(xiǎn)的。你最好不要玩弄他們。剪刀是危險(xiǎn)的。你最好不要玩弄他們。(can, had better not)Scissors can be dangerous. Youd better not play with them.5. 你最好不要不看題目就做作業(yè)。你最好不要不看題目就做作業(yè)。(had better not)Youd better not do your homework without reading the questions.6. 你不應(yīng)該看那么多電視。你不應(yīng)該看那么多電視。(shouldnt)You shouldnt watch so much TV.7. 不要在課堂上大聲喧嘩，好嗎

3、？不要在課堂上大聲喧嘩，好嗎？Dont make much noise in class, will you?8. 讓我們?nèi)ケ本┞糜伟桑脝?？讓我們?nèi)ケ本┞糜伟?，好嗎?let)Lets go on a trip to Beijing, shall we?學(xué)習(xí)目標(biāo)學(xué)習(xí)目標(biāo)1.知識目標(biāo)：學(xué)習(xí)詞匯：certain, active, possible, tidy, uncertain, inactive, impossible, untidy, incorrect, impatient學(xué)習(xí)詞組：tidy up, be usual for, be possible to do sth. all ove

4、r the floor, right now學(xué)習(xí)句子：Its usual for me to stay at home all day,Its possible to sleep with al that noise.Im certain that I can fix it myself.Things are all over the floor.Ill tidy up right now.學(xué)習(xí)目標(biāo)學(xué)習(xí)目標(biāo)2. 技能目標(biāo)：1)學(xué)習(xí)用否定前綴un-、in-和im-構(gòu)成反義形容詞的方法。2)學(xué)會使用否定前綴un-、in-和im-的形容詞表達(dá)否定含義。 I think do-it-yourself

5、is meaningful.It is really interesting to do it.prefix un-un-It isnt really interesting to do it.It is really uninteresting to do it.I dont think do-it-yourself is important.I think do-it-yourself is unimportant. Prefix 前綴前綴A prefix is a letter or a group of letters that add to the front of a word t

6、o form a new word.前綴是添加在單詞前形成新的單詞前綴是添加在單詞前形成新的單詞的一個(gè)字母或者一組字母。的一個(gè)字母或者一組字母。The baby is not happy.He is unhappy.The boy is not healthy.He is unhealthy. The room is not tidyIts untidy.The book is not interesting.Its uninteresting.PRACTISE 選詞填空：選詞填空： 1. Some people are _ ( friendly, unfriendly) to birds.

7、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.unfrien

8、dlyunhappyuncomfortableunsafeunhealthyOPPOSITES(反義詞反義詞) friendly happy comfortable safe healthy unhealthyun-certain common important interesting uninterestingunfriendlyunhappyuncomfortableunsafeuncertainuncommonunimportantTom often says hello to his teachers.He is very polite.Alice never says hello

9、to her teachers.She is very _.polite possible patient impatient im-impoliteimpoliteimpossiblePrefix im-1. This coat is very expensive. It costs 1000 yuan. That coat is not expensive. That is _expensive correct active inexpensivein-inexpensive.incorrectinactivePrefix in- You will be _ to pass the exa

10、m 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 wallet. (happy) There are some mistakes in his homework,

11、its _. (correct) It is _ to finish so much work in such short time. (possible)unableunusualunnecessaryunimportantunhappyincorrectimpossible用所給詞的適當(dāng)形式填空：用所給詞的適當(dāng)形式填空：1. un-2. im- 3. in- 最常用的前綴最常用的前綴常用在常用在以以m/ p 開頭的詞前開頭的詞前常用在以常用在以c開頭的詞前開頭的詞前Do you know the negative prefixes? 頭腦風(fēng)暴 ：LETS TRY TOGETHER!1._i

12、m_possible 9. _un_able 17. un_tidy2. _im_polite 10. _un_safe 18. _un_usual3. _im_patient 11. _un_friendly 19. _un_ certain4. _im_proper 12. _un_happy 20. _uncomfortable5. _in_correct 13. _un_healthy 21. _un_important6. _in_active 14. _un_kind 22. _un_interesting7. _in_direct 15. _un_ lucky 23. _un_n

13、ecessary8. _in_complete 16. _un_pleasant 24. _un_common1 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 all that noise. unusualImpossibleEx

14、ercises3 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. uncertainuntidyExercisesI dont believe what he says, because he is not honest. I don

15、t believe what he says, because he is _.dishonestdishonest“dis-”Adding:前綴前綴dis-,dis- “不不”、“無無”，加在某些動詞或名詞前構(gòu)成反義加在某些動詞或名詞前構(gòu)成反義詞。詞。 dislike 不喜歡disagree 不同意 dishonest 不誠實(shí)的disappear 不見，消失disorder 無秩序，混亂disbelieve 不信 disability 無能，無力 like agree HonestAppear order believe ability These desks are not regular

16、. Please put these irregular desks in order.regular irregular“ir-”Adding: Un- is the most common prefix for adjectives. Im- is often used in front of the words which begin with p.In- is never used in front of the words which begin with l,r.un-in-im-Homework:1.Finish off the exercises.2.Copy the new words three times.