初中英语变形规则(7页).doc
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1、-初中英语变形规则-第 6 页初中英语变形规则一、名词单数变复数规则:1、绝大多数的可数名词的复数形式,是在该词末尾加上后辍-s。读音变化:结尾是清辅音读s,结尾是浊辅音或元音读z。例:friendfriends; catcats; stylestyles; sportsports; piecepieces2、凡是以s、z、x、ch、sh结尾的词,在该词末尾加上后辍-es构成复数。读音变化:统一加读iz。例:busbuses; quizquizzes; foxfoxes; matchmatches; flashflashes3、以辅音字母+y结尾的名词,将y改变为i,再加-es。读音变化:加读
2、z。例:candycandies; daisydaisies; fairyfairies; ladyladies; storystories4、以-o结尾的名词,如果不是外来词或缩写,就加-es,否则加-s构成复数。读音变化:加读z。例:tomatotomatoes; potatopotatoes; torpedotorpedoes; bingobingoes反例:silosilos; pianopianos(外来词); photophotos; macromacros(缩写词)5、以-f或-fe结尾的名词,多为将-f或-fe改变为-ves,但有例外。读音变化:尾音f改读vz。例:knifek
3、nives; lifelives; leafleaves; staffstaves; scarfscarves反例:roofroofs6、 不规则变形:man woman child foot tooth goose Mouse Frenchman Englishman ox Chinese Japanese sheep deer fish People police cattle man doctor 口诀:男人女人a变e,孩子后加ren;中国人和日本人,绵羊鹿鱼形不变; 脚和牙齿还有鹅,就把oo变ee;mouse、mice是老鼠,公牛ox加 en;人们警察牵小牛,单数形式复数意;男医生和女
4、医生,man和doctor都变身。 二、动词第三人称单数形式构成规则动词原形变第三人称单数的规则与发音规律同名词单数变复数大致相同,请认真观察。1、大多数动词在词尾加“S”在清辅音后发音为s,在浊辅音及元音后发音为 z。如: stopstops s ; makemakes s readreads z ; playplays z2、以辅音字母加“y”结尾的,要先将“y”变为“i”,然后在加“es”读iz 如: flyflies z; carrycarries z studystudies z; worryworries3、以“s, x, ch, sh”结尾的,在词尾加“es”,发音为iz 如:
5、teachteaches iz; watchwatches iz4、以“o”结尾的动词,加“es”,读z 如: gogoes z dodoes z下面几个动词变为单数时,原词的元音部分的发音发生了较大的变化,请注意记忆。 如: 1、do du:does dz2、say seisays sez以不发音字母“e”结尾的开音节词,如果尾音是s,z时,加“s”后字母“e”发音, 与所加“s”一起读做iz。 如: closecloses izbe动词包括:am, is, are。第三人称单数用 is;过去式为 was;复数用are,过去式为were. 除上述规律外,还应注意下面三点:1. 动词 have
6、 ,遇到主语是第三人称单数时,要用 has; 动词 be 的第三人称单数形式是is。2. 含有动词第三人称单数形式的句子变否定句时,要用 doesnt + 动词原形,如:He goes to school at six in the morning. (变否定句) He doesnt go to school at six in the morning.3. 对含有动词第三人称单数形式的句子提问时,要用助动词 does,如:She goes home at five every day. (对划线部分提问) When / What time does she go home every day
7、?三、 动词的过去式和过去分词规则动词的过去式和过去分词是一样,变化规则如下:1一般在动词末尾加-ed,如:pull-pulled, cook-cooked2结尾是e加d,如:taste-tasted3末尾只有一个元音字母和一个辅音字母的重读闭音节,应双写末尾的辅音字母,再加-ed,如:stop-stopped4以“辅音字母+y”结尾的,变y为i, 再加-ed,如:study-studied(1) AAA型(动词原形、过去式、过去分词同形) cost(花费) cost cost cut(割) cut cut hit(打) hit hit hurt 伤害) hurt hurt let(让) le
8、t let put(放) put put read (读) read read spread (伸展/ 传播) spread spread (2) AAB型(动词原形与过去式同形) beat(跳动) beat beaten (3) ABA型(动词原形与过去分词同形) become(变成)became become come(来) came come run(跑) ran run (4) ABB型(过去式与过去分词同形) dig(挖) dug dug get(得到) got got hang(吊死) hanged hanged hang(悬挂) hung hung hold(抓住) held h
9、eld lay (产卵) laid laid shine(照耀) shone shone sit(坐) sat sat win (赢) won won meet(遇见) met met keep (保持) kept kept sleep(睡) slept slept sweep(扫) swept swept feel(感觉) felt felt flee (逃跑) fled fled smell(闻) smelt smelt leave(离开) left left build(建设) built built lend(借出) lent lent send (传送) sent sent spen
10、d(花费) spent spent sink (沉下)sunk /sank snuk /sunken lose (丢失) lost lost burn (燃烧) burnt burnt learn(学习) learnt learnt mean(意思是)meant meant catch(抓住) caught caught teach(教) taught taught bring(带来) brought brought fight (战斗) fought fought buy(买) bought bought think(想) thought thought hear (听见) heard he
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