he must be in the office.be换成is 可以么
问题描述:
he must be in the office.be换成is 可以么
答
不可以 must后面接动词原型he be in the office 可以替换么he is in the office 不能用be多谢
he must be in the office.be换成is 可以么
不可以 must后面接动词原型he be in the office 可以替换么he is in the office 不能用be多谢