becomev.变成；成为；变得；适合（某人）；使（人）显得漂亮become bankrupt[经] 倒闭； 破产become personal变成对个人的议论,进行人身攻击become a lawyer成为律师become aware of开始觉察到； 发现become a burden成为负担become critical变得至关重要become a master成为主人become a expert成为专家become a custom成为习惯become a leader成为伟大的领袖

1. My passport is due to expire in two months.
   我的护照再过两个月就到期了。
2. The bill is due on the lst of next month.
   那张支票下个月一号到期。