完成

be done with sth.

be through with sth.

be finished with sth.

to complete sth.

to finish doing sth.

be over with sth.

be over and done with

end up

累

原因：学习、运动、打工

表达：

i’m exhausted.

i’m tired-out/over tired.

i’m dog tired.

i’m beat/dead beat.

i’m burned out.

run out of steam/energy

be out of energy/shape

i’m worn out.

be tired out

knock oneself out on sth.

eyes are starting to blur

hardly stay awake

hardly concentrate

i’m bushed.

学生学习用功

around the clock

on end = in a row

day and night = night and day

36/48 hours a day

day in and day out

put a lot of hours/time/days into…

burn the midnight oil

stay up/be up all night

can’t tear oneself away from…

couldn’t put down…

glue one’s eyes to…