You must be careful when you cross the street.改为祈使句
问题描述:
You must be careful when you cross the street.改为祈使句
答
Be careful when you cross the street!
祝好!
如果不懂建议重新提问,也可以直接追问哦.be careful 祈使句就是以动词为开头的句子。Be 就是动词。。拜托。。是系动词。。。