-----the road and turn left.then you can see the park A go d

go straight 只能单独用不能加宾语的
go作为去,行走等意思时是不及物动词,而straight是不能做介词的,因而他们的后面不加东西的它经常这样用
Go straight down those stairs and follow the signs
Through this street and then go straight
down 是可以做介词的,所以你懂得.