this? --It ’ s a pen. -- They are pen s . -- What are those? --What ’ s that? --It ’ s an English book. -- They are English book s . ba gs watch es orange s pen s --What ’ re these ? --They ’ re … . map s case s key s --What ’ re those ? --They ’ re … . This __________________. These __________________. is a tree are two trees are some trees 名词变复数 1.一般在名词后面加上“s”: book → books , bag → bags 2.以 s, x, sh, ch ,等结尾的词加“ es”: bus → buses , watch → watches 3.以辅音字母+ y结尾的词,变 y为i加 es , baby → babies 以元音字母+ y结尾的名词变复数时,直接加s变复数, boy → boys 以 o 结尾的名词变复数(a)加 s的名词 photo → photo s, piano → piano s, radio → radio s, zoo → zoo s(b)水果、蔬菜、人这样的单词加 es potato → potato es(土豆) tomato → tomato es(西红柿) mango---mango es (芒果) Negro---negro es(黑人) hero---hero es(英雄) 黑人英雄喜欢吃土豆、西红柿和芒果。(简称两人两菜)
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