I like to wash up.
I like to clean my room.
I like to wash the floor.
I like to help my mother, because she is a very busy woman, and it is not easy for her to wash up every day, for example.
I like to cook.
отрицательное - можно то же самое, только с I don't like.
'Yesterday I did the was....." я такой конструкции не знаю, потому что её вроде нет в английском языке.