I promised toget to the cinema before 5,but now it is pouring with rain.they ___for me impatiently.为什么是must be waiting 而不是must have waited

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I promised toget to the cinema before 5,but now it is pouring with rain.they ___for me impatiently.为什么是must be waiting 而不是must have waited

I promised toget to the cinema before 5,but now it is pouring with rain.they ___for me impatiently.为什么是must be waiting 而不是must have waited
I promised toget to the cinema before 5,but now it is pouring with rain.they ___for me impatiently.
为什么是must be waiting 而不是must have waited

I promised toget to the cinema before 5,but now it is pouring with rain.they ___for me impatiently.为什么是must be waiting 而不是must have waited
这个是表示现在正在发生的事情
must be waiting=肯定正在等
must have waited=肯定等了（等完了）
翻译：我答应5点前赶到电影院,但现在下大雨（赶不过去了）,他们肯定正在等得不耐烦.

很明显啊now it is pouring with rain，现在正在下着倾盆大雨，所以后面也得用现在进行时了，they must be waiting for me impatiently他们现在一定等我等得不耐烦了

因为要用正在进行时态，前面说正在下雨，所以正在等
must have waited意思是已经等了很久

是对他们现在状况的推测，用be doing强调正处于什么状态，，must have waited是对过去状态的推测，如果要说一直在等那也应该用must have been waiting

他们一定等得很不耐烦but now 是现在的时间，must have waited是完成式

must be waiting意为：一定在等
must have waited意为：一定等了
要注意意思，本句意思是：现在大雨倾盆，他们一定等得我不耐烦了（表示现在在等，并不是已经走了）

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