飞机已经起飞了，为什么用个是had taken off,为什么不用had been taken off.飞机是被起飞不是自己起飞啊？

这两个短语在什么情况下用？

这里是 have done 和 have been done 两个语态的区别

have done 和 have been done都是完成时态，前者是主动的。后者是被动的
起飞这个词是没有被动语态的，所以不能用had been taken

希望对你有帮助哦~

起飞 take off 没有被动态

take off 表示飞机起飞，不用被动语态　，　be动词＋过去分词　是被动语态

你好！ 这是个逻辑问题， had taken off 是主动语态 had been taken off 是被动语态 飞机起飞，如果是你要表达：人操纵飞机起飞这时要用被动 the plane had been taken off by the pilot. 如果是只想表达飞机已经起飞的事实： the plane had taken off. 仅代表个人观点，不喜勿喷，谢谢。