1.(prohibit)+ subject, action, activity禁止；不许
Brazil's constitution forbids the military use of nuclear energy.巴西宪法禁止将核能用于军事目的。
2.(hinder)+ action, thing使成为不可能；阻止；制止
His own pride forbids him to ask Arthur's help.他自尊心太强, 不会请求阿瑟帮忙。
Custom forbids any modernization.传统习俗阻碍着所有现代化进程。
3.(exclude)不准…进入；阻止…参加；把…排除在外
Girls under nine were forbidden from educational institutions.九岁以下女童被教育机构拒之门外。
4.God forbid!
(may it not happen)但愿这样的事情不会发生！
They could fall ill −God forbid.他们会病倒——但愿不会发生这样的事情。