don't donesn,t哪个用单数,那个用复数?

问题描述:

don't donesn,t哪个用单数,那个用复数?

don't算是复数,don't用于第一人称(I,We),第二人称(you)和第三人称复数(They)
donesn't用于第三人称单数,he /she/it