present tense | |
I/you/we/they | fall behind |
he/she/it | falls behind |
present participle | falling behind |
past tense | fell behind |
past participle | fallen behind |
My daughter is falling behind with her school work. 我女儿在学校的功课落后了。
We started to fall behind with the rent. 我们开始拖欠房租。
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