Mr Smith's plane ___(arrive) .Let's wait for him here.我认为应该是 is arriving,但答案上却是 will arrive

Mr Smith's plane ___(arrive) .Let's wait for him here.我认为应该是 is arriving,但答案上却是 will arrive
Mr Smith's plane ___(arrive) .Let's wait for him here.
我认为应该是 is arriving,但答案上却是 will arrive

Mr Smith's plane ___(arrive) .Let's wait for him here.我认为应该是 is arriving,但答案上却是 will arrive
二者都表示将来,但意思有着明显的差别——
1、be + 趋向动词的现在分词表示已经觉察到迹象的将来,意思是“正在向着说话人的方向发展”,如：
* Spring is coming.春天就要到了.
* New year ia approaching.新年正在临近,
* It is getting dark.天快要黑了.
因此,Mr Smith's plane is arriving.表示的是或者机场已经通知了准确地到达时间,或者说话人听到了飞机的声音.
2、will 可以用来表示推测,意思是“该是/有可能”,如：
* This will be the book you are looking for.这可能是你正在找的那本书.
* He will have got home by now.现在他该到家了.
从本题的下文 Let's wait for him here 分析,说明说话人还不知道飞机的准确到达时间,暂时还需要等待,因此他猜测着说“史密斯先生的飞机该到了,让我们在这里等他一会儿”,不然他可能会说“飞机就要到了,我们赶快去迎接他吧”之类的话.

is arriving 和will arrive 都有将来的意思，但愿is arriving 更侧重于将来打算的计划打算做某事。will arrive 则就是将来做的意思。而这句话，smith的飞机打算计划来，就有些与意思不符，故用will arrive.

arrive是瞬间动词吧，要是我选也用 will arrive

“ is arriving”表示进行时，而“arrive”是短暂性词，所以“ will arrive”更合适。