One step.
一步。
Two steps.
两步。
Three steps.
三步。
One small step.
一小步。
Two big steps.
两大步。
Take one step forward.
向前迈一步。
Take two steps forward.
向前迈两步。
Take one step backward.
向后退一步。
Take two steps backward.
向后退两步。
Take one big step backward.
向后迈一大步。
Oh, I bumped my head against the door.
哦,我头撞门上了。