on foot 和walk均指“步行”的意思。on foot 方式狀語，一般放在句末。例1：The cimema is not far,you can get there on foot.電影院不遠,你可以走到那去。walk 也指“行走，步行”的意思.其後一般不加介詞。例2：I missed the bus and had to walk home.我沒趕上公共汽車，只好走回家。How did you get here?' `I walked.' ‘你是怎麼來的?’‘我走來的.’如何轉換?清楚兩者的用法，轉換也就容易了。比如把例1 用walk 來表示,即：The cimema is not far,you can walk there.而例2的句子可轉換成用on foot 的句子：I missed the bus and had to go home on foot.我沒趕上公共汽車，只好走回家。How did you get here?' `I came here on foot.

walk on是固定搭配

walk on釋義：

走下去；繼續行走

例句：

It is simple pleasures, such as a walk on a sunny day, which have a cumulative effect on our mood.

諸如在晴朗的日子散步這樣簡樸的樂趣對我們的情緒有累積性益處。

Some spiders can walk on water.

有些蜘蛛能在水上行走。