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1、关于派生构词法及应用第1页，此课件共26页哦复复习习构构词词法之一法之一派生，了解前派生，了解前缀缀和后和后缀缀的作用的作用学学习习常常见见的前的前缀缀和后和后缀缀应用：应用：语法填空语法填空 阅读理解中猜词义阅读理解中猜词义学习目标学习目标第2页，此课件共26页哦able_反反adv.vt.反反adj._第3页，此课件共26页哦Lead-inableunableablyenabledisable反反adv.vt.反反adj.disabled派生法：由词缀（分前、后缀）和词根派生法：由词缀（分前、后缀）和词根相结合构成相结合构成新新单词的方法。单词的方法。第4页，此课件共26页哦加前缀：加前缀
2、：happy unhappy 加后缀：加后缀：develop development既加前缀又加后缀：既加前缀又加后缀：forget unforgetable派生词派生词 第5页，此课件共26页哦前缀前缀表否定：表否定：dis-,in-,im-,ir-,il-,un-,non-dislike incorrect impolite irregular illegal unlike non-stop over-：超过，超出：超过，超出 overweight overwork oversleep第6页，此课件共26页哦mis-：错误：错误 misunderstand misdore-：再，又：再，又
3、 rewrite reuse pre-：先于：先于.preview prepayfore-：前：前,预先预先 forehead forecast第7页，此课件共26页哦后缀后缀1.名名词词后后缀缀：表人：表人：-er,-or,-ist worker actor artistadj.n.:-ness sadness darknessv.n.:-t/-te -tion actaction inventinventionv.n.:-ment development movement第8页，此课件共26页哦2.形容形容词词后后缀缀：-ful：充：充满满.的的 careful harmful-less:
4、缺少缺少.的的 careless harmless -ive：有：有.倾倾向的向的 effective attractive-able：可以：可以/能能够够.的的 buyable enjoyable第9页，此课件共26页哦-ed：(人人)感到感到.的的 annoyed 表被表被动动 written words 表完成表完成 boiled water-ing：令人令人.的的 annoying 表主表主动动 the dancing girl 表表进进行中行中 boiling water第10页，此课件共26页哦3.副副词词后后缀缀：-ly:quickly equallyPS：并非全部：并非全部-l
5、y结结尾的尾的词词都是副都是副词词：lovely 可可爱爱的的 friendly 友善的友善的 likely 可能的可能的 lonely 孤独的孤独的4.动词动词后后缀缀-en：使使.deepdeepen widewiden有有时时en-：enable enlarge enrich第11页，此课件共26页哦思考：前思考：前缀缀和后和后缀缀分分别别改改变变的原的原词词的的什么？什么？possible impossible invent invention 前前缀缀 后后缀缀 词词性性 意思意思第12页，此课件共26页哦Task 1value v._ 有价有价值值的的entertain v._ n
6、.likely adj.反义：反义：_ read v._ 误读误读appear v._ 消失消失joy n._ adj.broad adj._ vt.拓拓宽宽，拓展，拓展help n._ adj.无助的无助的valuable-mentun-dis-mis-fulen-lessadj.娱乐娱乐adj.不可能的不可能的v.v.快乐的，高兴的快乐的，高兴的第13页，此课件共26页哦Task 2分析画线词的词性和词义。分析画线词的词性和词义。This possibility was unforeseeable，because it almos tnever happened.unforeseeable
7、 un fore see able 不不预先预先看见看见可以可以的的adj.不可不可预见预见的的方法方法:拆分单词拆分单词第14页，此课件共26页哦常常见见的猜词义的猜词义题题目目:1.The underlined word XXX means/refers to/stands for _.2.The word XXX can be replaced by“_”.3.Whats the meaning of XXX?4.Which of the following is the closest in meaning to XXX?第15页，此课件共26页哦1.Remember that Peo
8、ple on line may not be who they seem.Because you cant see or even hear the person.It would be easy for someone to misrepresent himself or herself.Thus someone who says that she is a 12-year-old girl.could really be an old man.A.make a wrong judgement(判断判断)about B.understand somebody wrongly C.give a
9、 wrong description(描写描写)of D.form a wrong opinion about Task 3mis-错误错误 represent vt.陈陈/描述描述第16页，此课件共26页哦2.Dont listen to his nonsense.A.meaningless words B.beautiful words C.meaningful words D.unpleasant words3.He lived a hard life in pre-liberation days.A.before liberation B.after liberation C.sinc
10、e liberation D.during liberation non-:非，无非，无sense n.意义意义pre-:在在.之前之前liberation n.解放解放第17页，此课件共26页哦4.Shops are very overcrowded now.A.busy with much work B.having too many people C.full of energy D.too complicated to understand5.He was performing and his technique was unbelievable.A.can be trusted B.
11、very exciting C.very attractive D.difficult to believe;very goodun-表否定表否定believe v.相信相信-able adj.能能.的的over-过度过度crowd v.拥挤拥挤-ed adj.第18页，此课件共26页哦Task 4 运用所学知运用所学知识识，完成，完成语语法填空法填空练习练习。解解题题方法：方法：1、阅读阅读全句，正确理解句全句，正确理解句义义及所缺及所缺词词词义词义。2、分析缺、分析缺词词担任的担任的句子成分句子成分，正确判断，正确判断词词性性。(如动词、名词等如动词、名词等)3、判断缺、判断缺词应词应采用
12、的正确采用的正确词词形形。(如动如动词的形式、名词的单复数等词的形式、名词的单复数等)第19页，此课件共26页哦 Without proper planning,tourism can cause problems.For example,too many _(tour)can crowd public places,which are not so _(enjoy)for people living there.If tourism creates too much traffic,people there will become _(annoy)and unhappy.They begin
13、 to _(like)tourists and to treat them _(politely).They forget how _(help)tourism can be to the countrys economy.-ed-ableimpolitely-istsdis-ful第20页，此课件共26页哦 It is important to think about how tourism affects the people of a destination(目的地目的地)country.The _(develop)of tourism is quite beneficial,since
14、 it can help a country keep the customs and beauty that are _(attract)to tourists.It will also advance the wealth and _(happy)of local people.Too much tourism can be a problem.If tourism grows too _(quick),people must leave other jobs to work in the tourism industry.This means that other parts of th
15、e countrys economy can suffer.-ment-ivehappiness-ly第21页，此课件共26页哦Exercise on the paper.Exercise on P28,Workbook.Homework第22页，此课件共26页哦第23页，此课件共26页哦Youth is a kind of wealth.It will gradually _(appear)with time elapsing(流逝流逝).What can we do is not to waste the youth.In my opinion,for one thing,it is to
16、 realize our value,our idea.When we are young,we have the best conditions in our lives,good memories,good _(understand)and so on.We should make full use of these conditions to study more.For aother,we should _(rich)our lives,make them _(color)and and gather as many different experiences as possible.
17、1dis-ingsen-ful第24页，此课件共26页哦 Teenagers secrets should be kept to themselves,and no one else,including their parents,has the right to stick their noses into the childrens private life.As we know,teenagers are going through a special period of _(develop)both physically and _(psychological).They are cu
18、rious about and puzzled by the _(expect)changes in their body and mind.Whats more,exposed to a world of adults,it is only too _(nature)for them to begin imitating adults behavior in secret.Boys begin to smoke and girls begin to spend time doing their hair.2unexcepted-ment-lynatural第25页，此课件共26页哦感感谢谢大大家家观观看看第26页，此课件共26页哦