He is the only one of the students ___late this morning.A.who was B.who were C.that were D.whom wa

题目

He is the only one of the students ___late this morning.A.who was B.who were C.that were D.whom wa
为什么不选that?如果只是单复数的原因,那如果有 that was 这个选项,应该选哪个?
D选项是 whom was

答案

这道题应该选A,从单复数的原因上排除B.C,主语HE在定于从句中作主语,因此只能用who,不能用whom,whom只有主语在从句中作宾语时可用.
如果有that was就也可以选,因为定语从句中that可以指代人或物.