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2022年初中英语关于复数的变换


    复数的变换
    1.在后面加s。如:fathers, books, Americans, Germans, apples, bananas
    2.x, sh, ch, s, tch后加es。如:boxes, glasses, dresses, watches, wishes, faxes
    3.(1)以辅音字母加y结尾的变y为i再加es 如:baby-babies, family-families, duty-duties, comedy- comedies, documentary-documentaries, story-stories
    (2)以元音字母加y结尾的直接加s。如:day-days, boy-boys, toy-toys, key-keys, ways
    4.以o结尾加s(外来词)。如:radios, photos, 但如是辅音加o的加es:如: tomatoes西红柿, potatoes马铃薯
    5.以f或fe结尾的变f为v再加es(s)。如:knife-knives, wife-wives, half-halves, shelf-shelves, leaf-leaves, yourself-yourselves
    6.单复数相同(不变的)有:fish, sheep, deer鹿子, Chinese, Japanese
    7.一般只有复数,没有单数的有:people,pants, shorts, shoes, glasses, gloves, clothes, socks
    8.单词形式不变,既可以是单数也可以是复数的有:police警察局,警察, class班,同学, family家,家庭成员
    9.合成的复数一般只加主要名词,多数为后一个单词。如:action movie-action movies, pen pal-pen pals; 但如果是由man或woman所组成的合成词的复数则同时为复数。如:man doctor-men doctors, woman teacher-women teachers
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