1、Unit 4 Do it yourself Study skills,The boys like playing basketball. They are active in doing sports. But they are _ in study.,not active,inactive,happy,unhappy,not happy,I will finish my homework as much as possible, but its _ for me to finish all of it.,impossible,not possible,Millies mom is on bu
2、siness (出差). Her bedroom is _. Can you help her make the room tidy?,untidy,not tidy,untidy,possible,impossible,happy,unhappy,active,inactive,Opposites (反义词),tidy,prefixes,前缀,We can add _ before an adjective to express the opposite (相反的) meaning.,“un-”, “im-”, “in-”,For most of the adjectives, we add
3、 “un-” to make it opposite.,friendly happy comfortable certain tidy able fair lucky usual ,unfriendly unhappy uncomfortable uncertain untidy unable unfair unlucky unusual,Rules,If the adjective begins with “p”, we usually add “im-” before it.,polite possible patient possible ,impolite impossible imp
4、atient impossible,Rules,But: pleasant unpleasant,expensive correct active direct ,inexpensive incorrect inactive indirect,Rules,But some adjectives are special. You should add “in-” before them to make the opposite meaning.,1._friendly 2._happy 3._correct 4._polite 5._comfortable 6._expensive _healt
5、hy 8._possible 9._tidy 10._certain 11._patient 12._able 13.,7.,Check your memory!,un,un,un,un,un,un,un,im,im,im,in,in,_regular,14._honest,ir,dis,We can add before an adjective to express the opposite meaning.,“ir-” or “dis-”,1. Annie: Do you spend a lot of time doing outdoorsports?Simon: Sure. Its u
6、sual for me to stay at home all day. 2. Sandy: Our neighbour next door is putting somethingon the wall.Mum: Its possible to sleep with all that noise.,unusual,impossible,Read the conversation. Add the correct prefixes to the adjectives so that all the sentences make sense.,3. Millie: Are you able to
7、 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 right now.,uncertain,untidy,Discussion,How should we behave in class or in school?,We should be _ to others.We should be _ to the cl
8、assmates in need.We should not be _ in sports.We had better not make our classroom _.We had better not wear _ clothes at school.,friendly/kind,patient/helpful,inactive,untidy,untidy/uncomfortable,Tommy and Leo are twin brothers. They look so much alike that people are _ to tell them at first sight.
9、If one knows them well, its easy to tell them apart. Tommy likes smiling. He is patient and willing to help others. However, Leo looks _, for he _ smiling and never greets others. When his classmates ask him questions, he is _ and _ to answer them. It is _ for Leo to behave that way. Leo looks _beca
10、use no one wants to make friends with him. He thinks it is _ for his classmates to treat him so coldly.If Leo stops doing those _ things, people will find it _ to differentiate Leo and Tommy,unfriendly,unhappy/uncomfortable,improper/impolite/incorrect,unfair,dislikes,impatient,unwilling,unable,impro
11、per,impossible,Fill in the blanks with adjectives with prefixes un-,in-, im- and dis-.,1,3,2,4,5,6,7,8,9,Playing a game: a magic box Here is a magic box with nine cards, and under each card there is a task for you to finish. Choose any of them and finish the task. After you finish all the tasks, the
12、re is a big surprise for you!,Its _ (舒服的) to sit in it.,Its _ (不舒服的) to sit on it.,comfortable,uncomfortable,The boy is not very strong, for he is always _ in sports. A. inactive B. active,A,not direct _ not kind _ not possible _,indirect,unkind,impossible,unusual,The snow is so heavy. It is _ tosee
13、 such heavy snow. That is, the snow is much heavier than usual.,This isnt an important thing. =,This is an _ thing.,unimportant,It is imcorrect to read someone elses letter. 2. David often says bad words to others, so he is inwelcome. 3. Its infriendly to throw stones at birds.,incorrect,unwelcome,u
14、nfriendly,Correct the mistakes:,Can you remember the rules?,We can add _ _ (before/after) an adjective to express the opposite meaning.,“un-”, “in-”, “ im-”,before,Work out the rule!,1._ 是最常用的否定前缀。 2.否定前缀_常用在以字母c开头的单词前， 3.否定前缀_常用在以字母p 开头的单词前。,“un-”,“in-”,“im-”,从来都不会用在以字母l、r开头的单词前。,、b、m,Summary,1. Fo
15、r most of the adjectives, we add “un-” to make it opposite.unkind, unhappy, unlucky 2. If the adjective begins with “p”, we usually add “im-” before it.impossible, impolite 3. Some adjectives are special. You should add “ in-” before them to make the opposite meaning. incorrect, inactive ,1. Remember all the negative prefixes. 2. Try to find out some other negative prefixes. 3. Preview Task.,Homework,See you next time! Thank you!,