had been done & having been done 区别All the flights____because of the snowstorm,we had to take the train instead.A.were canceled B.had been canceled C.having canceled D.having been canceled为什么不是B,不是应该用过去完成时吗?
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/04 07:54:52
![had been done & having been done 区别All the flights____because of the snowstorm,we had to take the train instead.A.were canceled B.had been canceled C.having canceled D.having been canceled为什么不是B,不是应该用过去完成时吗?](/uploads/image/z/9201428-44-8.jpg?t=had+been+done+%26+having+been+done+%E5%8C%BA%E5%88%ABAll+the+flights____because+of+the+snowstorm%2Cwe+had+to+take+the+train+instead.A.were+canceled+B.had+been+canceled+C.having+canceled+D.having+been+canceled%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%8D%E6%98%AFB%2C%E4%B8%8D%E6%98%AF%E5%BA%94%E8%AF%A5%E7%94%A8%E8%BF%87%E5%8E%BB%E5%AE%8C%E6%88%90%E6%97%B6%E5%90%97%3F)
had been done & having been done 区别All the flights____because of the snowstorm,we had to take the train instead.A.were canceled B.had been canceled C.having canceled D.having been canceled为什么不是B,不是应该用过去完成时吗?
had been done & having been done 区别
All the flights____because of the snowstorm,we had to take the train instead.
A.were canceled B.had been canceled C.having canceled D.having been canceled
为什么不是B,不是应该用过去完成时吗?
had been done & having been done 区别All the flights____because of the snowstorm,we had to take the train instead.A.were canceled B.had been canceled C.having canceled D.having been canceled为什么不是B,不是应该用过去完成时吗?
这是独立主格结构,不是谓语动词,所以不能用had been done,只能用现在分词完成时的被动式.如果你用had been done,we 的前面就必须加一个and 或其他的并列连词了.