要想学好英语,在学习的过程中要多积累和掌握。语法是大家认为学习最难的地方,学好英语语法的前提是理解和掌握。下面是小编给大家分享的英语语法知识,大家可以作为学习的参考。

(1)一般情况下,在单数名词词尾加S.

pet-pets, debt- debts, investment-investments.

(2)如果单数名词是以s, sh, ch, x, z结尾的,在词尾加es。

stress-stresses, brush-brushes match-matches, fox-foxesfizz-fizzes, buzz-buzzes

(3)单数名词以o结尾的情况:

①一般在词尾加s.

radio-radios, studio-studios

zoo-zoos, bamboo-bamboos

photo-photos, piano-pianos

solo-solos, kilo-kilos

cello-cellos, disco- discos

tobacco- tobaccos

②下列词加es。

hero-heroes, Negro-Negroes, potato-potatoes, tomato-tomatoes, mango-mangoes这种词很少,可以记为顺口溜“黑人英雄爱吃土豆、西红柿、芒果”。

③下列词既可加s,也可加es。

buffaloes (s),mottoes (s),frescoes(s),volcanoes (s),mementoes (s),mosquitoes (s),cargoes(s),vetoes (s),这些词要单独记忆。

(4)单数名词以辅音字母加y结尾的情况:

①以辅音字母加y结尾的,一般把词尾字母y变为i,再加es。

factory-factories, family-families

secretary-secretaries, security-securities ,specialty-specialties, enemy- enemies.

②如果单数名数是以元音字母加y结尾的,在词尾加s.

day-days, way-ways ,money-moneys一valley-valleysboy-boys, play-plays

key-keys, joy-joys, toy-toys

donkey-donkeys, ray-rays

(5)单数名词以f或fe结尾的情况:

①一般先将f或fe改为v,然后再加es。

thief-thieves, wife-wives

leaf-leaves, life-lives

loaf-loaves, calf-calves

knife-knives, shelf-shelves

②但有些例外,需要单独记忆。

chief-chiefs, roof-roofs, proof-proofs

safe-safes, belief-beliefs

Cliff-cliffs, gulf-gulfs

③还有另外一种特殊情况,即个别以f或fe结尾的词会有两种复数形式。

handkerchief-handkerchiefs/handkerchieves

以上就是小编给大家分享的英语语法知识,希望可以给大家学习带来帮助。