fall all over
fall all over someone
To show too much love or thanks toward (someone).
She must love him. Every time you see them, she's falling all over him.
When Bob found the lady's ring and returned it, she fell all over him.
fall asleep at the switch
To fail to perform an expected task; be remiss in one's duty.
The two airplanes wouldn't have collided, if the control tower operator hadn't fallen asleep at the switch.
The dean promised our department $250,000 but the foundation never sent the money because someone in the dean's office fell asleep at the switch.
fall away
To decline; diminish.
I was shocked to see how haggard Alan looked; he seems to be falling away to a shadow.
fall back on
fall back upon
To retreat to.
The enemy made a strong attack, and the soldiers fell back on the fort.
To go for help to; turn to in time of need.
When the big bills for Mother's hospital care came, Joe was glad he had money in the bank to fall back on.
If Mr. Jones can't find a job as a teacher, he can fall back on his skill as a printer.
fall back
To move back; go back. Usually used with a group as subject.
The army fell back before their stubborn enemies.
The crowd around the hurt boy fell back when someone shouted "Give him air!"
fall behind
To go slower than others and be far behind them.
When the campers took a hike in the woods, two boys fell behind and got lost.
Frank's lessons were too hard for him, and he soon fell behind the rest of the class.
Mary was not promoted because she dreamed too much and fell behind in her lessons.
Eve fell behind in her studies and finally had to drop out of school.
fall by the wayside
drop by the wayside
To give up or fail before the finish.
The boys tried to make a 50-mile hike, but most of them fell by the wayside.
George, Harry, and John entered college to become teachers, but Harry and John fell by the wayside, and only George graduated.
fall down on the job
To fail to work well.
Потерпеть неудачу при попытке хорошо работать.
The boss was disappointed when his workers fell down on the job.
Начальник был разочарован, когда его работники не смогли хорошо выполнить работу.