1.主语的第三人称单数形式,即可用“he, she, it”代替的。如: he, she, it my friend, his teacher, our classroom, Tom, Mary's uncle 2.名词有单数名词和复数名词。如:man(单数)---men(复数) banana(单数)---bananas(复数) 3.动词有原形,第三人称单数形式,-ing分词,过去式,过去分词。如: go---goes---going---went---gone work---works---working---worked---worked watch---watches---watching---watched---watched 当主语为第三人称单数的时候,谓语动词必须用相应的第三人称单数形式。如: The boy wants to be a sales assistant. Our English teacher is from the US. Their daughter makes her breakfast all by herself. 12) 英语中的“单数” 1.主语的第三人称单数形式,即可用“he, she, it”代替的。如: he, she, it my friend, his teacher, our classroom, Tom, Mary's uncle 2.名词有单数名词和复数名词。如:man(单数)---men(复数) banana(单数)---bananas(复数) 3.动词有原形,第三人称单数形式,-ing分词,过去式,过去分词。如: go---goes---going---went---gone work---works---working---worked---worked watch---watches---watching---watched---watched 当主语为第三人称单数的时候,谓语动词必须用相应的第三人称单数形式。如: The boy wants to be a sales assistant. Our English teacher is from the US. Their daughter makes her breakfast all by herself. 13) 名词的复数构成的几种形式 名词复数的构成可分为规则变化和不规则变化两种。 I 名词复数的规则变化 1.一般在名词词尾加-s。如:pear---pears hamburger---hamburgers desk---desks tree---trees 2.以字母-s, -sh, -ch, -x结尾的名词,词尾加-es。如:class---classes dish---dishes watch---watches box---boxes 3.以字母-o结尾的某些名词,词尾加-es。如:potato---potatoes tomato---tomatoes Negro---Negroes hero---heroes 4.以辅音字母加-y结尾的名词,将-y变为-i,再加-es。如:family---families dictionary---dictionaries city---cities country---countries 5.以字母-f或-fe结尾的名词,将-f或-fe变为-v,再加-es。如: half---halves leaf---leaves thief---thieves knife---knives self---selves wife---wives life---lives wolf---wolves shelf---shelves loaf---loaves 但是:scarf---scarves(fes) roof---roofs serf---serfs gulf---gulfs chief---chiefs proof---proofs belief---beliefs II 名词复数的不规则变化 1.将-oo改为--ee。如: foot---feet tooth---teeth 2.将-man改为-men。如: man---men woman---women policeman---policemen postman---postmen 3.添加词尾。如:child---children 4.单复数同形。如: sheep---sheep deer---deer fish---fish people---people 5.表示“某国人”的单、复数变化。即“中日瑞不变英法变,其它国把-s加后面”。如: Chinese---Chinese Japanese---Japanese Swiss---Swiss Englishman---Englishmen Frenchman---Frenchmen American---Americans Australian---Australians Canadian---Canadians Korean---Koreans Russian---Russians Indian---Indians 6.其它。如: mouse---mice apple tree---apple trees man teacher---men teachers
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