________to China before,Mr Williams didn't know how to use chopsticks A.Never having been.B.Ha...
________to China before,Mr Williams didn't know how to use chopsticks
A.Never having been.B.Having never been
为什么?陈述句的时候不是I have never吗?
人气：470 ℃ 时间：2020-02-03 11:41:05
解答
这是现在分词做非谓语动词,主动所以用having been,而表示否定时,否定词要放在非谓语词的前面
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