Until you’ve finished your work,you___allowed to leave.A.will be B.will not be C.will have bUntil you’ve finished your work,you___allowed to leave.A.will be B.will not be C.will have been D.are求详解
问题描述：
Until you’ve finished your work,you___allowed to leave.A.will be B.will not be C.will have b
Until you’ve finished your work,
you___allowed to leave.A.will be B.will not
be C.will have been D.are
求详解
答
B
until引导的是时间状语从句.时间状语从句与主句有一个“主将从现”的原则.此题的从句是现在完成时,故可断定主句是一般将来时.所以排除C、D.
又根据句意,这是“not...until..."(直到……才……）,故排除A.