スケート靴を忘れないでね。

skate; skates; skating

shoes; boots; footwear; footgear

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to forget; to leave carelessly; to be forgetful of; to forget about; to forget (an article)

indicates emphasis, agreement, request for confirmation, etc.; is it so; hey; come on; listen; not