Hey Guys! 

I study english a long time and i know that the word one in english have a lot of meanings and i gonna show some examples: 

Talking about someone that you love

She is the only one 

Making Picks/Choices 

Do you like these pants? 

I like this one and 

Talking about nubers or quantities

I have one dog 

So.. lets talk about this topic and if i made writting mistakes please correct me ok? 

Thanks!