fell behind

• The woman fell behind in her rent payments
  这个女人拖欠了租金。
• He is working hared for fear that he should fall behind others
  他努力工作，唯恐落在别人后面。
• Soon he fell behind in the race
  很快，他就在这场比赛中落后了。
• That you have to meet or else fall behind
  让你去达到或是做不到
• That you have to meet or else fall behind
  让你去达到或是做不到
• One marcher fell behind the others
  有个行进者落在了别人后面。
• The illness caused him to fall behind the rest of the class
  那次生病使得他落在班上其他学生之后。
• You see us falling behind , jake
  你看我们两个落后了吗，杰克？
• We have stopped deliveries , because he fell behind with the bill
  由于他拖欠帐款，我方已停止发货。
• All nations must adapt and modernise or fall behind
  所有国家必须适应和加快现代化步伐否则就会落后。