we are leaving tomorrow and i haven't even started packing yet为什么用动名词,不用动词吗?

问题描述:

we are leaving tomorrow and i haven't even started packing yet为什么用动名词,不用动词吗?

前边are leaving是be动词+动词ing形式表示将来时的一种,这个应该无需解释了.
后边的start packing 是start +动词ing形式的固定用法,表示开始做某事.start 还可以跟不定式to do,请注意区别.