1、Unit 4 Do it yourselfStudy skillsThe boys like playing basketball.They are active in doing sports.But they are _ in study.not activeinactivehappyunhappynot happyI will finish my homework as much as possible,but its _ for me to finish all of it.impossible not possibleMillies mom is on business(出差出差).
2、Her bedroom is _.Can you help her make the room tidy?untidy not tidytidypossible possiblehappy happyactive Opposites(反义词反义词)tidy prefixes前缀前缀We can add _ before an adjective to express the opposite(相反的相反的)meaning.“un-”,“im-”,“in-”For most of the adjectives,we add“un-”to make it opposite.friendly hap
3、py comfortable certain tidy able fair lucky usual unfriendlyunhappyuncomfortableuncertainuntidyunableunfairunluckyunusualRules If the adjective begins with“p”,we usually add“im-”before it.polite possible patient possible impoliteimpossibleimpatient impossibleRulesBut:pleasant unpleasantexpensive cor
4、rect active direct inexpensiveincorrectinactiveindirectRules But some adjectives are special.You should add“in-”before them to make the opposite meaning.1._friendly 2._happy 3._correct 4._polite5._comfortable 6._expensive _healthy 8._possible9._tidy 10._certain11._patient 12._able13.7.Check your mem
5、ory!unununununununimimiminin_regular 14._honestirdis“ir-”or“dis-”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 all that noise.unusualimpossibl
6、e Read the conversation.Add the correct prefixes to the adjectives so that all the sentences make sense.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 right now.unc
7、ertainuntidy DiscussionHow should we behave in class or in school?We should be _ to others.We should be _ to the classmates in need.We should not be _ in sports.We had better not make our classroom _.We had better not wear _ clothes at school.friendly/kindpatient/helpfulinactiveuntidyuntidy/uncomfor
8、table Tommy and Leo are twin brothers.They look so much alike that people are _ to tell them at first sight.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
9、 ask him questions,he is _ and _ to answer them.It is _ for Leo to behave that way.Leo looks _ because 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 unfriendlyun
10、happy/uncomfortable improper/impolite/incorrectunfair dislikesimpatientunwillingunableimproperimpossibleFill in the blanks with adjectives with prefixes un-,in-,im-and dis-.132456789 Playing a game:a magic boxHere is a magic box with nine cards,and under each card there is a task for you to finish.C
11、hoose any of them and finish the task.After you finish all the tasks,there is a big surprise for you!Its _(舒服的舒服的)to sit in it.Its _(不舒服的不舒服的)to sit on fortableuncomfortableThe boy is not very strong,for he is always _ in sports.A.inactive B.activeAnot direct _not kind _not possible _indirectunkindi
12、mpossibleunusual The snow is so heavy.It is _ to see such heavy snow.That is,the snow is much heavier than usual.This isnt an important thing.=This is an _ thing.unimportant1.It is imcorrect to read someone elses letter.2.David often says bad words to others,so he is inwelcome.3.Its infriendly to th
13、row stones at birds.incorrectunwelcomeunfriendly Correct the mistakes:Can you remember the rules?We can add _(before/after)an adjective toexpress the opposite meaning.“un-”,“in-”,“im-”before Work out the rule!1._ 1._ 是最常用的否定前缀。是最常用的否定前缀。2.2.否定前缀否定前缀_常用在以字母常用在以字母c开头的单词前，开头的单词前，3.3.否定前缀否定前缀_常用在以字母常用在以
14、字母p 开头开头的单词前。的单词前。“un-”“in-”“im-”从来都不会用在以字母从来都不会用在以字母l、r开头的单词前。开头的单词前。、b、m 1.For 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
