一、How much does the elephant weight? 这个大象有多重
这句话有错误：weight是名词
应该是 How much is the elephant's weight?
或者 How much does the elephant weigh?
不是所有格的问题，而是weight 与weigh 的区别，这里weight作名词，当然用所有格和is;weigh 作为动词，所以用does.
PS weight也有动词，是使某物重一些的意思，在这里解释不通
二、大象多重用英语怎么说?3吨怎么说？
你好
有三种问法：
1 How much does the elephant weigh? It weighs 3 tons
2 How heavy is the elephant ? It is 3 tons heavy
3 What weight is the elephant ?==What's the weight of the elephant? Its weight is 3 tons
三、一头大象重多少？英语翻译3种
Do you know the weight of an elephent?
What is the weight of an elephent?
How heavy the elephent is?
