非谓语问题,有关expose的____to foreign cultures from their childhood,

1 exposed to foreign cultures from their childhood，some of them are familiar with these things. =because they are exposed to foreign cultures from their childhood,some of them are familiar with these things. 因为从小 接触到外国文化，他们中的一些人 对这些事情 是熟悉的。 2expose在这儿 可以 是被动的用法，但 因为是表示状态的 可以看做 表语 也就是说 be exposed to sth 可以看做 系表结构