What I have learnt in the English lessons in the last week(from 6-11-2007 to 8-11-2007)(12-11-2007)

I have learnt how to use active voice and passive voice in the English lesson in the last week. Active sentences are formed by subject(doer), verb and object(reciver). And passive sentences are formed by subject(reciver), verb and object(doer). They are very useful for my English.