this is my dog .his name is coco.

问题描述:

this is my dog .his name is coco.

This is my dog,whose name is Coco.

你好:
This is my dog whose name is coco.

Coco is(the) (name) (of) my dog.希望能帮到你

I have a dog named coco.

以下是你要的正确答案:
This is my dog named Coco.
This is my dog whose name is Coco.