赛教课件刘丽.ppt
九年级上册九年级上册 Module6 unit3Module6 unit3 专专 题题 之之 前前 缀缀 后后 缀缀 执教教师：执教教师：刘刘 丽丽 The girl is veryThe girl is very_ . .happyhappyThe boy is sad,he isThe boy is sad,he is_ . .ununhappyhappy呜呜呜呜下辈子下辈子 我再也不当农民了我再也不当农民了trueusualunhealthy前缀前缀1.前缀前缀“un”表示否定意义表示否定意义 “无无,不不”。 happy1+1=2possible1+1=31元钱=1分 possible ?!?! 证明： 1元=100分 =10分10分 =0.1元0.1元 =0.01元 =1分 impossible ?!?!Yes,sometimes its possible.But sometimes its impossible.impossiblepolite前缀前缀“im”也表示否定意义也表示否定意义 “无无,不不”。 表示否定意义表示否定意义 “无，不无，不” 的前缀还有：的前缀还有： in- incorrect, inhuman, dis- disagree, dislikere2.前缀前缀“re”表示表示 “再再”=againcyclewriteuseturn 学而时习之学而时习之unhappy unsualunhealthyuntrueimpossibleimpoliteincorrectinhumandisagree dislike recyclereuserewritereturn 小结：加前缀，不改变单词的词性小结：加前缀，不改变单词的词性1.able表示表示“可能，易于，适合可能，易于，适合于于”，构成形容词，构成形容词，如：如：comfortable（想一想，还有吗？）（想一想，还有吗？）后缀后缀常见的后缀：常见的后缀： reusable， enjoyable, lovable(可爱的可爱的)，eatable(可吃的可吃的) The girl is doing her homework, she is very careful.2. ful 表示表示“充满充满.的，具有的，具有.性质的性质的”，构成形容词，构成形容词，如：如： helpful, hopeful， useful, careful3. less 与与-ful 相反，表示相反，表示“少的，少的，不足不足 的的”，构成形容词，构成形容词，如：如： helpless, hopeless useless, careless 小结：加后缀，改变单词的词性小结：加后缀，改变单词的词性1Make new words. Join the words in Box A with the parts of words in Box B.full of care _A care collect done hope possible usual used wanted wasteB -able -ful im- -less re- un-careful1 can be collected _2 not done _3 full of hope _4 without any hope _5 not possible _6 not usual _7 not used _8 used again _9 not wanted _10 making a lot of waste _collectableundonehopefulhopelessimpossibleunusualunusedreusedunwantedwasteful考查你的考查你的时间到了时间到了 1.Its_to throw away paper and metal .1.Its_to throw away paper and metal . A.waste B. wasteful C.wastes A.waste B. wasteful C.wastes 2.He is so_that he always makes 2.He is so_that he always makes mistakes. mistakes. A.careful B.care C. careless A.careful B.care C. careless 3. He feels _because he lost his wallet . 3. He feels _because he lost his wallet . A.happy B. happily C.unhappy A.happy B. happily C.unhappy 4.Dont throw away your old books,you can 4.Dont throw away your old books,you can _ them. _ them. A.reuse B.reusable C.useful A.reuse B.reusable C.useful单项选择题单项选择题BCCAIts _ (possible) for us to do so much work within so little time. impossible小结：小结：今天我们学习了什么重要今天我们学习了什么重要的知识呢？的知识呢？Homework: 找出我们学过的有前缀、找出我们学过的有前缀、 后缀的其它单词后缀的其它单词Thank you! Byebye!
