How was the trip?It must be very tiring ,flying for more than 10 hours英语问题

分类: 作业答案 • 2022-04-25 12:30:10

问题描述：

How was the trip?It must be very tiring ,flying for more than 10 hours英语问题
flying for more than 10 hours是个什么丛句,为什么用flying呢?那不是已经过去的事情了吗?

答

这个flying不是表示动词的现在进行时,而是动词的现在分词,做句子成分,应该是主语,flying for more than 10 hours must be very tiring,用it做主语,把这个后置了.
不是所有动词的ing形式都表示现在进行时的.