作为动词的walk：
ADV.briskly, fast, quickly, swiftly | slowly | calmly, quietly | cautiously |ahead, away, back, backwards, forward, in, on, out, together
PREP.along, down, into, out of, to, towards, up, etc. She walked cautiously up the drive towards the door.

作为名词的walk：
PREP.on a/the ~ He met her on one of his Sunday afternoon walks. | within (a) ~ All amenities are within an easy walk of the hotel. | ~ from, ~ to