Re: Go by foot.
NOT A TEACHER
I will only add that saying "
go by foot" is a common mistake among learners of English. The reason is that the learners think that if you, for example, can say "go somewhere by car/plane/taxi etc." it means that you always state the means of transportation after "by" and thus " go by foot" is possible. Sadly for us learners, while that works with machinery, it does not work with feet. Btw. a useful alternative to "go somewhere by foot" is simply saying "walk somewhere".
Please note that I'm not a teacher.