Grammar fix
fall behind
fail to keep up
To not make as much progress as others or as expected, so that you are behind in work, studies, payments, or other activities.
Hear it in context
Notice where the phrase sounds natural.
If you miss too many classes, you might fall behind in your studies.
During busy exam periods, some students fall behind on their assignments because they have too much to do at once.
Fix the pattern
One small grammar move makes it sound right.
Not: I fell behind of the others in class.
Say: I fell behind the others in class. / fell behind with my work.
'Fall behind' + person (no 'of'); 'fall behind WITH' a task.
Which sounds natural?
Tap the one a native speaker would say.
'Fall behind' is the everyday verb for not keeping up; the formal version is a tutor's report.
Build natural chunks
Words that usually travel with it.
fall behind (with/on)
- with work
- on payments
- the others
- in class