（a blue whale） is the biggest whale（）中为什么不能这样表示?不是有a horse can .（a blue whale） is the biggest whale（）中为什么不能这样表示?不是有a horse can run fast.a+单数名词也可表示一类吗?

the biggest whale is the blue whale.或the biggest whale is a blue whale.那个表达正确? The biggest whale is( )blue wale.A.the B.a Which is smaller,a blue whale or an elephant? （a blue whale） is the biggest whale（）中为什么不能这样表示?不是有a horse can .（a blue whale） is the biggest whale（）中为什么不能这样表示?不是有a horse can run fast.a+单数名词也可表示一类吗? The biggest whale is the blue whale.可以替换成The biggest whale is a blue whale 为什么可以的话 ,当a 和the都表示一类人或事物的时候的区别. is an elephant much smller than a blue whale的意思 回答这个句子:Is an elephant much smallre than a blue whale? The blue whale is the biggest animal in tThe blue whale is the biggest animal in the world翻译 A big blue whale is 100 feet long and weigh up 150 tons.(对划线部分提问)划线部分 100 feet long and weigh up 150 tons ———　 ———　is a big blue whale? Is a whale mammal(哺乳动物）or a fish 1.Is an elephant much smaller than a blue whale?2.Which fish can swim faster than most boats? look at that blue whale .it () our of the water A come B comes C is coming ln size,a sperm whale is()than a killer whale.a killer whale is()than a sperm whale The Killer Whale is （ ）. Is the blue whale the biggest animal-----（living和alive两者选填一个）如题选什么 为什么 The biggest whale is ________ blue whale,which grows to be about 29 meters long—the height of ________9­story building.A．the；the B．a；aC．a；the D．the；a How big is the heart of blue whale,the world's largest animalA.the size of a peaB.the size of a carC.the size of a football a+名词与the+名词the biggest whale is blue whale-----横线地方为什么要只能用the不能用aa+名词和the+名词 不是都表示一类人或一类物吗？有何区别？