class regulations require从句26.Class regulations require ___ is the last to leave the classroom _____ off all the lights.  A.who; should turn B.whom; shall turn  C.whomever; turns D.whoever; turn为什么选dwho呢?谁最后一个走,谁

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class regulations require从句26.Class regulations require ___ is the last to leave the classroom _____ off all the lights.  A.who; should turn B.whom; shall turn  C.whomever; turns D.whoever; turn为什么选dwho呢?谁最后一个走,谁
class regulations require从句
26.Class regulations require ___ is the last to leave the classroom _____ off all the lights.
  A.who; should turn B.whom; shall turn
  C.whomever; turns D.whoever; turn
为什么选d
who呢?
谁最后一个走,谁关灯

class regulations require从句26.Class regulations require ___ is the last to leave the classroom _____ off all the lights.  A.who; should turn B.whom; shall turn  C.whomever; turns D.whoever; turn为什么选dwho呢?谁最后一个走,谁
D.中地点whoever是一个不定代词“无论谁”,词义正确;而其他几个分别是:who谁,whom谁,whomever是宾格形式的,而这里要求的作主语的,用主格形式的才对.turn是should turn这个虚拟语气的省略形式,而turns和shall turn都是是谓语动词形式,均错误

whoever= anyone who
require 后面的从句中要用虚拟语气(should)+动词原形
不可用who。 因为要求的是---是最后一个离教室的“人”关灯,而不是“谁”关灯。