一个很经典的例句,是区分allow两种常见用法的句子
It doesn't allow smoking here ,but if you really want to,i can allow you to smoke another room.这里不允许吸烟,但如果你确实想要,我可以允许你换个房间抽.
其实就是alow sb to do sth 和allow doing sth 的用法区别