What you want to do is look at something near you and describe how it makes you feel. Say if you were next to a television, does it make you feel happy, scared, disappointed? Use that and write it down.
The water moves approximately up, and down, while the wave moves foward.
Main clause: Chris's chief interest was tennis.
subordinate clause:which he was just learning to play/adverb or adverbial clause of time
The clever girl's scouts group had an empty banner that was at the oval park where all the scouts gather.
lol Just an idea... XD
Hope this helps :)