单选题
21.
He was attending a meeting, ______come to your birthday party then.
A、
unless he would have
B、
or he would
C、
but he did not
D、
or he would have
【正确答案】
D
【答案解析】
本题为含蓄条件句,第一句陈述过去的事实,第二句由or引导一个与过去事实相反的含蓄条件(相当于if he had not been attending a meeting),因此谓语必须用虚拟过去时would have come。这种句子的特点是句中往往有表示过去的时间状语。答案B是虚拟现在时,不合句意。
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