用以下3个短语造句（还会提高悬赏）

I saw him plant an apple tree in his garden.
see sb do sth 表示看见一个动作的过程

I saw him playing by the river.

see sb doing sth 表示看见一个动作正在发生，单兵没看见整个过程。

we cheer him on his winning of the Olimpic Games

I see him clean the house
I see him crossing the street
Dad always cheer me on

1.I see you do your homework.
2.I see hei doing housework now.
3.I cheer you on an athletic meeting