l love English.

I want to learn English because I love speaking English and the way it sounds. It sounds fun. And English is also useful for my job.

Hi Nhu,   "It sounds fun."  Is not the best way to say what you mean here.  Many will argue it is not correct English.    I would suggest using the example I provided above.

Hope this helps!

Rob

l love English.

I want to learn English because I love speaking English. It sounds fun. And English is also useful for my job.

Well done!