He bougt me a cake as birthday present.(改被动语态)I ------------------------as birthday presentA cake -------------------as birthday present.

He bougt me a cake as birthday present.(改被动语态)I ------------------------as birthday presentA cake -------------------as birthday present.
He bougt me a cake as birthday present.(改被动语态)
I ------------------------as birthday present
A cake -------------------as birthday present.

He bougt me a cake as birthday present.(改被动语态)I ------------------------as birthday presentA cake -------------------as birthday present.
I WAS BOUGHT A CAKE AS BIRTHDAY PRESENT FROM HIM
A CAKE WAS BOUGHT BY HIM AS BIRTHDAY PRESENT