Question

i used to going to school on foot but now iusually go to school by bike

i used to going to school on foot but now iusually go to school by bike 哪里错了？

Answer 1

虞其君解析：
I used to going to school on foot but now I usually go to school by bike.
答案：going错了，应该改为go。used to do Sth,表示“过去常常做某事”
翻译：我过去常常走路去上学，但是现在我通常骑自行车去上学。

Answer 2

I used to go to school on foot.

这里是use的用法。use to do 过去常做某事，现在不做了。
use to doing 是表示习惯做某事。