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：
英文发音规则child---children foot---feet tooth---teeth
goo---gee man---men woman---women
mou---mice lou---lice ox---oxen
penny---pence analysis---analys appendix---appendices parenthesis---parenthes basis---bas stimulus---stimuli ellipsis---ellips axis---axes hypothesis---hypothes oasis---oas crisis----cris 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---lens。
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]:learned
calf---calves half---halves leaf----leaves
life----lives loaf---loaves lf---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, grou, salmon, trout, carp, bison, sheep等
2）以－e或－ss结尾的表示民族或国籍的名词，如：Chins, Japane, Portugue, Swiss, Vietname等
3）某些以－s结尾的名词，如：barracks, corps, crossroads, gallows, headquarters, means, ries, s
batepecies, works等
4）某些表示计量单位的名词，如：horpower, hertz, kilohertz, li, mu等2011泉州中考
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！！lofter是什么意思
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, t等词修饰时，谓语应该与piece, drop, t等的单复数形式保持一致
hey jude原唱例如：Few drops of water are needed to save the flower.
l2tp是什么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,darkness,heat,light,electricity,energy,power,sugar,s alt,rice,corn,powder,flour,sand,dust,dirt,
garbage,grass,hair,furniture,luggage,clothing,mail,equipment,food,meat,fruit,b read,toast,stone,iron,copper,chalk,paper,
glass,wood,money,poetry,jewelry,machinery,weaponry,personnel,scenery,ha ppiness,kindness,honesty,friendship,attention,wi
sdom,success,courage,bravery,health,wealth,ignorance,trouble,ea,luck,lau ghter,love,peace,news,information,knowledge,演讲技巧
multiply
intelligence,fun,pleasure,entertainment,enjoyment,recreation,relaxation,progre ss,room,work,homework,population,percent,
mathematics,econmics,statistics,meteorology,anthropology,architecture,physi cs,photography,ethics,politics,mechanics,
genetics,geology,geography,chemistry,philosophy,biology,history,music,Engli sh,measles,mumps,diabetes,malaria,pediatrics,
obsterics
gab
