what's the different between "I bought a book for him." and "I bought a book to him." ?
Are they both right?Then if i say"I bought a book for Tom." Who will really pay for the book? Does it mean "I bought Tom a book as a present" or "I help Tom to buy a book, and when I give the book to him he will pay me back ." How can I separate these two situations?
Thank you for all your answers!

Question

what's the different between "I bought a book for him." and "I bought a book to him." ?
Are they both right?Then if i say"I bought a book for Tom."  Who will really pay for the book?  Does it mean "I bought Tom a book as a present" or "I help Tom to buy a book, and when I give the book to him he will pay me back ." How can I separate these two situations?
Thank you for all your answers!

Answer

"I bought a book for him."  Bought for
"I bought a book to him."   Bought to doesn't work; its not proper phrase
I brought a book to him. Brought to is phrase that works. It means that you bring book to him (in past).

Answer

Hi.
No, they are not both right.
'I bought a book for him' is the correct option.

Tim

Answer

"I bought a book to him." is WRONG.
That is the difference.