有这样一个句子:
Two months has passed since he joined the army.
since引导时间状语从句,后面用一般过去时,而且动作应该是短暂性,而主句用完成时且应该用延续性动词,这题pass应该是短暂性动词吧,为什么可以这么用?
另外请问borrow 的延续性动词是keep,那lend对应的延续性动词是哪一个动词?