Question

这个英语句子存在语法错误吗？

I was walking on the street one day,then saw you I didn’t know what to say.
不是让重新改句子，请指出语法错误。比如：then 后边没有主语I 可以吗？

Answer 1

这句话，存在很大的语法错误！

正确的句子应该是这样：

I was walking on the street when I saw you that day,but I didn’t know what to say

按照你的意思，不应该用“one day”，应该用“that day”

意思是，那一天我遇到你，但不知说什么！

曲解你的意思，请你谅解！

Answer 2

有点问题，应该是：
I was walking on the street one day.Then I saw you ,but I didn't know what to say.

一楼的句子少成分，“not knowing what to say”少主语

还有二楼的“I was walking on the street when I saw you that day”也有些语序问题，应该是That day when I was walking on the street.I saw you ,but I didn't know what to say.
这样才正确！（其实这句话翻译不只一种）

Answer 3

错误是一个句子中有两个动词,这样会好些:
One day,I was walking on the street .Then ,I saw you ,but didn’t know what to say

Answer 4

Walking along a street one day, I saw you, not knowing what to say.