His english,which used to be very poor,is now excellent.这个定语从句中,为_其他解答

His english,which used to be very poor,is now excellent.
这个定语从句中,为什么只能用which而不能用that?

人气：296 ℃　时间：2020-04-07 06:37:29

解答

因为有逗号,是非限制性定语从句
非限制性定语从句不能用that