特殊名词变复数_名词变复数特殊
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名词的词形变化
1.不规则复数形式
1)来自古英语的复数形式,如:
child---children
foot---feet
tooth---teeth
goose---geese
man---men
woman---women
mouse---mice
louse---lice
ox---oxen
penny---pence
analysis---analyses
appendix---appendices parenthesis---parentheses
basis---bases
stimulus---stimuli
ellipsis---ellipses
axis---axes
hypothesis---hypotheses
oasis---oases
crisis----crises
criterion---criteria
phenomenon---phenomena
datum---data
medium---media bacterium---bacteria
nucleus---nuclei
fungus---fungi
alumnus---alumni
focus---foci
radius---radii
terminus---termini
larva---larvae
alga---algae
formula---formulae
data---datas
lens---lenses。
2)词尾读音为[f]并以-f或0-fe结尾的名词复数形式有以下几种情况:
a)规则形式:
belief---beliefs
chief----chiefs
cliff----cliffs
grief----griefs b)不规则形式,即把-f或-fe变成-v,再加-es,读音为[vz]: calf---calves
half---halves
leaf----leaves
life----lives
loaf---loaves
self---shelves
thief---thieves
wife---wives
wolf---wolves c)既可是规则形式又可是不规则形式:
dwarf---dwarfs/dwarves
hoof---hoofs/hoves scarf---scarfs/scarves
wharf---wharfs/wharves
3)词干以-o结尾的名次有三种情况:
a)附属形式为-s:这类词包括缩略词kilos, photos;表示国籍或民族的词Filipinos, Eskimos以及radios ,solos, sopranos, studios b)复数形式为-es,如:heroes, potatoes, tomatoes, Negroes。c)复数有规则的和不规则的两种形式,如:
cargo---cargos/cargoes
mosquito---mosquitos/mosquitoes
volcano---volacbos/volcanoes
2.单复数同形的名词
1)某些动物名词,如:deer, grouse, salmon, trout, carp, bison, sheep等 2)以-ese或-结尾的表示民族或国籍的名词,如:Chinses, Japanese, Portuguese, Swi, Vietnamese等
3)某些以-s结尾的名词,如:barracks, corps, croroads, gallows, headquarters, means, series, species, works等
4)某些表示计量单位的名词,如:horsepower, hertz, kilohertz, li, mu等
其他一些名词,如:aircraft, spacercarft, craft, offspring等。其中请特别注意-s结尾的单复数同形的名词,它们是考试的重点!
3.不可数名词
不可数名词前一般不需要加定冠词,永远不能加不定冠词!不可数名词作主语,谓语要用单数形式。如:Water is important.但如果不可数名词前面被piece, drop, set等词修饰时,谓语应该与piece, drop, set等的单复数形式保持一致
例如:Few drops of water are needed to save the flower.下面是典型的不可数名词,是应该熟记的!
air,smoke,steam,vapor,hydrogen,oxygen,nitrogen,water,oil,soup,juice,ink,rain,snow,ice,tea,coffee,wine,sunlight,sunshine,lightning,thunder,weather,darkne,heat,light,electricity,energy,power,sugar,salt,rice,corn,powder,flour,sand,dust,dirt,garbage,gra,hair,furniture,luggage,clothing,mail,equipment,food,meat,fruit,bread,toast,stone,iron,copper,chalk,paper,gla,wood,money,poetry,jewelry,machinery,weaponry,personnel,scenery,happine,kindne,honesty,friendship,attention,wi
sdom,succe,courage,bravery,health,wealth,ignorance,trouble,ease,luck,laughter,love,peace,news,information,knowledge,intelligence,fun,pleasure,entertainment,enjoyment,recreation,relaxation,progre,room,work,homework,population,percent,mathematics,econmics,statistics,meteorology,anthropology,architecture,physics,photography,ethics,politics,mechanics,genetics,geology,geography,chemistry,philosophy,biology,history,music,English,measles,mumps,diabetes,malaria,pediatrics,obsterics