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英语必备

来源:易榕旅网
 变构成形式 Example 化类型 I 1. 直接在名词后加s cat – cats, fruit – fruits, apple – apples, pear – pears 2. 以子音字母加y结尾的,改 fly – flies, monkey – monkeys. y为i, 再加es, 但当y 前面是元音时,y不变, 直接加s, II 1. 以子音字母加o结尾的, hero – heroes, tomato – tomatoes, potato 一般加es, – potatoes 2. 元音字母加o结尾的,只加bamboo – bamboos, kangaroo- s kangaroos 3. 某些外来语和简略语只加s piano – pianos, photo – photos, III 1. 以f或fe结尾的,变f或fe leaf – leaves, knife – knives, wife – 为ves wives, life – lives 2. 以s, ss, x, z, sh, ch结尾的,glass – glasses, buzz – buzzes, dish – 加S dishes, bench – benches, bus – buses, (但也有直接加s的) stomach – stomachs, box – boxes 构成形式 Example 改变内部元音字母 foot – feet, tooth – teeth, man – men, woman – women, mouse – mice. 加字尾en或ren ox – oxen, child – children 单复数同形 sheep – sheep, deer – deer, fish, fish 有些外来语保留原来的复数形bacterium – bacteria, (细菌) 式 phenomenon – phenomena(现象) 1

变构成形式 Example 化类型 I 1. 直接在名词后加s cat – cats, fruit – fruits, apple – apples, 2. 以子音字母加y结尾的,改pear – pears y为i, 再加es, 但当y前面 是元音时,y不变,直接加fly – flies, monkey – monkeys. s, II 1. 以子音字母加o结尾的,一ox – oxen, child – children 般加es, 2. 元音字母加o结尾的,只加bamboo – bamboos, kangaroo- s kangaroos. 3. 某些外来语和简略语只加s piano – pianos, photo – photos, III 1. 以f或fe结尾的,变f或feleaf – leaves, knife – knives, wife – 为ves wives, life – lives 2. 以s, ss, x, z, sh, ch结尾的,glass – glasses, buzz – buzzes, dish – 加S dishes, bench – benches, bus – buses, (但也有直接加s的) stomach – stomachs, box – boxes 构成形式 Example 改变内变元音字母 foot – feet, tooth – teeth, man – men, woman – women, mouse – mice. 加字尾en或ren ox – oxen, child – children 单复数同形 sheep – sheep, deer – deer, 有些外来语保留原来的复数形式 bacterium – bacteria, (细菌) phenomenon – phenomena(现象) 2

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