可数名词变复数的拼写规则x.ppt

文档介绍：可数名词变复数的拼写规则
三班四组
an orange
→ two oranges
a pen
→ two pens
一般情况下,直接在词尾加-s
book →books backpack →backpacks
a pencil-box
→ two pencil-boxes
a watch
→ two watches
a bus
→ two buses
a dish
→ two dishes
以s,x,ch,sh等词尾的词，一般在词尾加-es
key→keys
a toy
→ two toys
以“元音字母+y”的词，词尾加-s
boy →boys
strawberry → strawberries
以“辅音字母+y”的词，
city → cities
变y为i，再加-es
a potato
→ two potatoes
a tomato
→ some tomatoes
黑人英雄喜欢吃西红柿和土豆
zoo →zoos
photo →photos
Negro→ Negroes(黑人)
hero → heroes(英雄)
a leaf
→ some leaves
a knife
→ some knives
以“f或fe结尾”的词，通常情况下变f或fe为v，再加-es
wife →wives wolf→wolves
注：roof → roofs（屋顶） chief → chiefs(首领)