当然,GMAT中要求限定性定语从句只能用that引导,而非限定性定语从句用which引导,举例:
he has the confidence that he could win(限定)
he has the confidence,which he conld win(非限)
但是有一个特例就是先行词+介词+which+ 限定性定语从句(无逗号)例如:
the speed with which we are polluting our environment outstrips the speed with which we are covering environment.