You must be careful when crossing the street.改为祈使句
You must be careful when crossing the street.改为祈使句
when crossing street,you must be careful
You must be careful when you cross the street.改为祈使句
Be careful when you are crossing the street.
Be careful when ( you are ) crossing the street.
be careful when you are crossing the street.可以改写成be careful
You must be careful when you cross the road.(改为祈使句)
you must be careful when you ( )the street
you must be careful改为祈使句
英语状语从句1.when crossing the street,you should be careful.所示是什么
_be careful when crossing the street.
you must be careful when you cross the street中可以用if替代when吗