用英语说我从北京去杭州怎么说

其实你的就差一点对，只要把from 放在beijing前面
I am from beijing to hangzhou
英语的是倒装很多，但也不是那里都用的~

I'm traveling from Beijing to Hangzhou.

or
I traveled from Beijing to Hangzhou.

I am from Beijing to Hangzhou

我从北京去杭州

I go to hangzhou from beijing