英语语法之名词单数变复数的变化规则及相关练习题

名词单数变复数的变化规则：,1.一般名词复数是在名词后面加s， 如： mapmaps，bagbags，bookbooks等； 2.以s,ss,x,sh,ch结尾的词加“es”，如: busbuses,watchwatches, boxboxes,classclasses,dishdishes等； 3. 大部分以f或fe结尾的名词变复数时,去掉f， fe 加ves,如： halfhalves，knifeknives，leafleaves wolfwolves，wifewives， lifelives thiefthieves 特殊的以f 结尾的名词直接加 s 变复数 ，如： roofroofs, beliefbeliefs等. 4以o 结尾的名词变复数时： （a）加s的名词有（无生命）：photophotos ，pianopianos， radioradios （b）加es的名词有（有生命）： potatopotatoes tomatotomatoes; heroheroes.,5 以辅音字母y结尾的名词变复数时，变y为i再加es，如: baby-babies, family-families, study-studies等； 以元音字母 y结尾的名词变复数时，直接加s，如： monkeymonkeys， holidayholidays， storeystoreys（楼层）； 6. oo变ee的单词：foot-feet, goose-geese,tooth-teeth； 7. a变e的单词： man-men, woman-women, policeman-policemen; 最特殊的一个：German-Germans 8. 复数与原形一致的单词：fish-fish, sheep-sheep, deer-deer, Chinese-Chinese, Japanese-Japanese.,练习题,1. There are three_(chair) in the classroom. 2.There are some_ (bus)in the street. 3.There are many _ here. (box) 4.There are some _on the floor. A. child B. man C. books 5.There are_ in the room. A. photos B. photoes C. photo 6.There is some _ in the river A. fish B. fishes C. fishs,7.There_ two _in the box. A. is watch B. are watches C. are watch 8. There are some _ in these _. A.knifespencil-boxes B.knivespencils-box C.knivespencil-box D.knivespencils-boxes,