2017小升初名词课件.pptx

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1、2017小升初名词讲解单数复数可数名词如何变化？规则变化不规则变化规则变化1.一般情况下，直接在词尾加-s构成复数形式。carbackpackcarsbackpacksbookbooksnamepencardrulernamespenscardsrulers练习一dog------duck-----chair-----table----band-----window-banana-tree------dogsduckschairstableshandswindowsbananastreesbox2.以s,x,ch,sh等结尾的名词，在词尾加-es构成复数形式

2、。boxesclassclasseswatchwatchesbrushbrushessxshchbusbusesfoxesfox(狐狸)dish(盘子)dishes练习二glass---box------brush---match---class----bus-----watch--glassesboxesbrushesmatchesclassesbuseswatches综合练习一glass--desk----school-box-----brush--hen-----match-class--bus----eye----watch-glassesdeskss

3、choolsboxesbrusheshensmatchesclassesbuseseyeswatches3.以“辅音字母+y”结尾的名词，应改y为i，再加-es。familyfamiliescomediescomedy(喜剧)yyld4.以“元音字母+y”结尾的名词，直接在词尾加-s构成复数形式。boyboysdaydaysoayykeycitiesstrawberrieskeyscity(城市)strawberry(草莓)练习三city-----------day----------boy----------family-------key---------

4、--strawberry-baby--------citiesdaysboysfamilieskeysstrawberriesbabies综合练习二strawberrykey---------glass------bus--------boy--------eye--------watch-----city--------school----strawberrieskeysglassesbusesboyseyeswatchescitiesschoolsbox----baby----family----brush----match---class----desk

5、----hen----day----boxesbabiesfamiliesbrushesmatchesclassesdeskshensdays5.以f或fe结尾的名词，先将f或fe变成v，再加-es构成复数形式。knifekniveshalfhalves“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。wivesleaveswolveswife(妻子)leaf(树叶)wolf(狼)roof(屋顶)roofsroof“小偷”(thief)的“妻子”(wife)用“刀子”(kni

6、fe)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。巧记一：妻子持刀去宰狼，小偷吓得发了慌；躲在架后保己命，半片树叶遮目光。按：wife（妻子），knife（小刀），wolf（狼），thief（小偷），shelf（架子），self（自己），life（生命），half（一半），leaf（树叶），scarf(围巾）。由self构成的复合词，其变化与self相同（如myself→ourselves；yourself→yourselves；himelf，herself，itself→themselves）。巧记二：练习四wife----knife

7、---wolf----thief----shelf---self----life-----half----leaf----wiveskniveswolvesthievesshelvesselvesliveshalvesleaves综合练习三wife-----key------glass---knife---boy-----eye-----watch--city------school-wiveskeysglassesbusesboyseyeswatchescitiesschoolsbox-----baby---family--brush--match-clas

8、s----desk----hen---