为什么will，may要用过去式？（新概念3）AFrenchman,forinstance,mightfindithardtolaughataRussianjoke.Inthesameway,aRussianmightfailtoseeanythingamusinginajokewitchwouldmakeanEnglishmanlaughtotears.

Question

为什么will，may要用过去式？（新概念3）
A Frenchman, for instance, might find it hard to laugh at a Russian joke. In the same way, a Russian might fail to see anything amusing in a joke witch would make an Englishman laugh to tears.

Answer 1

因为这里他所描述的场景都是假设出来的，假设情况下，will用would, may 用might