请问这是什么水果 英语要怎么翻译？

what kind of the fruit is it ?
what kind of fruit do you like?

当kind 是名词，意为“种类”，后面通过of接所要表达的具体种类。 而kind of 作为副词词组意为“ 有点儿 ”，表示程度，修饰动词或形容词。

what kind of the fruit is it ?
which kind of fruit do you like?
好像一般用which来征求类似问题的意见吧...

What's this fruit ?
Which fruit do you like ?

What kind of this fruit?
Which kind of fruit would you like ?

what kind of fruit is it?
Do you like what kind of fruit?