...are packed and ready to leave中的be packed 怎么理解 不是表示...答:be +被动 不能用于被动语态的及物动词或动词短语: fit, have, hold, marry, own, wish, cost, notice, watch agree with, arrive at / in, shake hands with, succeed in, suffer from, happen to, take part in, walk into, belong to This key just fits the lock. 2) ...