the fights ________because of the snowstrom,many passengers could do nothing but take the train.A.had been canceled B.have been cancled C.were canceled D.having been caneled 为什么选D
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the fights ________because of the snowstrom,many passengers could do nothing but take the train.A.had been canceled B.have been cancled C.were canceled D.having been caneled 为什么选D
the fights ________because of the snowstrom,many passengers could do nothing but take the train.
A.had been canceled B.have been cancled C.were canceled D.having been caneled 为什么选D
the fights ________because of the snowstrom,many passengers could do nothing but take the train.A.had been canceled B.have been cancled C.were canceled D.having been caneled 为什么选D
真正的主句是many passengers could do nothing but take the train.这是一个完整的句子.
中间用逗号隔开了,就表示the fights having been caneled because of the snowstrom不是一个句子,这里相当于一个状语从句.
因为这整个句子谓语动词是could do 前面的不是谓语,就用非谓语形式,非谓语形式有现在分词,过去分词,不定式,所以排除b c 又因为如果用had 就要是过去的过去,这句话没有具体的时间来对照,无法说明是过去的过去 ,所以选D