John has fallen behind.

约翰落后了。

Little Tom was always falling behind when we went up the hill.

我们上山的时候,小汤姆总是落后。

Production has fallen behind in the last few months.

前几个月产量下降了。

Several of the runners fell behind in the race.

有几个赛跑者在比赛中落在后面了。

The horse fell behind in the race.

那匹马在比赛中落后了。

He didn't want to fall behind in his studies.

他不想在学习上落后。

Andrew fell behind in his studies and failed the course.

安德鲁学习赶不上去,所修课程不及格。

John fell behind in his studies and finally had to leave school.

约翰在学习上跟不上别人,最后只得离开学校。

If you don't come to class regularly, you will fall behind in your studies.

如果你经常不来上课,学习成绩就会落在别人后面。

If your payments of rent fall behind, you will be asked to leave.

如果你不如期交房租,你就会被撵走。

If you fell behind in your payments, the finance company may seize your car.

假如你不能按时付款,信贷公司就可能扣你的车。

She's very worried about falling behind with the rent.

她为拖欠租金而不安。

The work of this class has been falling behind recently.

近来这个班的成绩一直处于较低水平。