如 I have cleaned my room如果是今天早上发生的,即过去时,怎样在用have down 过去分词造句急

如 I have cleaned my room
如果是今天早上发生的,即过去时,怎样在用have down 过去分词造句
急

童鞋.是have done把.你的标题让那个我压力很大.
I have finished my honework .
I have announced my decision.

down不是不能当动词用吗

l have finished my honework .
I have announced my decision

i have finished wy work for 3 hours
正确的