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1·She's fallen behind with the payments.

她已经拖欠付款了。《牛津词典》

2·He's fallen behind with his school work again.

他又没有按时做学校作业。《牛津词典》

3·They had fallen behind with their mortgage repayments.

他们拖欠了按揭还款。《牛津词典》

4·The tunnel project has already fallen behind schedule.

隧道工程已经晚了工期。《牛津词典》

5·I've fallen behind in work.

我工作落后了。

6·John has fallen behind.

约翰落后了。

7·We have fallen behind.

我们已经落后了。

8·Britain has fallen behind Japan in shipbuilding.

在造船方面英国已落到日本后头了。《新英汉大辞典》

9·Fallen behind the column geologists.

尾随其后的是一列地质学家。

10·My study has fallen behind a lot this term.

这个学期我的学业落后了很多。