pumas are large ,cat-like animals which are found in America为什么是主系表不是主谓宾?

pumas are large,cat-like animals which are found in american.为什么要加WHICH?pumas are large,cat-like animals are found in american.这样不行吗? pumas are large,cat-like animals which are found in america pumas are large, cat-like animals 的表语究竟是什么?!是large, cat-like animals还是animals? Pumas are large,cat-like animals which are found in America.这里的 ,cat-like animals 是什么成分 pumas are large ,cat-like animals which are found in America为什么是主系表不是主谓宾? pumas are large,cat-like animals which are found in american.我想问的是which后面为什么加are 而不可pumas are large,cat-like animals which are found in american.我想问的是which后面为什么加are 而不可以直接found are和found 复数语法问题pumas are large animals which are found in America 为什么是复数形式（pumas,animals)泛指不是用单数形式么 《新概念英语》（第三册）第一课《A Puma at Large》Pumas are large,cat-like animals which are found in America.When reports came into London Zoo that a wild puma had been spotted forty-five miles south of London,they were not taken ser 新概念英语3文章复述用英语复述下文,注意要的是文章,不要关键词!Pumas are large,cat-like animals which are found in America.When reports came into London Zoo that a wild puma had been spotted forty-five miles south of London,t I heard the man whose voice is special.Whose 作表语还是定语?① 那在定语从句中，whose可以做表语嘛？举个例子呗~② Pumas are large,cat-like animals which are found in America确切说，这个句子的先行词是Animals还 新概念英语第三册里第一课pumas are large为什么用复数形式?说动物种类不应该用单数吗? Why did he put a large bag over the cat? She eats a large bowl of cat cat food every day的肯定句 append buffers are too large Pumas never attack a human being except( )cornered?选项：A they are B being C that they areD when they are.为什么不能是A或C? Pumas never attack a human being except_____conered. A.that they are B when they are 为什么选B不选A The cat aren’t ---------------------.They are -----------. 改错 Are there a cat near here?