Verb + on = continue doing something
drive on / walk on / play on = continue walking/driving/playing, etc.
– Should we stop at this gas station or should we drive on the the next one?
go on = continue
– The party went on until 4 o’clock in the morning.
go on doing something = continue doing something
– We can’t go on spending money like this. We’ll have nothing left soon.
Also go on with something
– Don’t let me disturb you. Please go on with what you were doing.
keep on doing something = do it continuously or repeatedly
– He keeps on criticizing me. I’m really tired of it!
drag on = continue for too long
– Let’s make a decision now. I don’t want this problem to drag on.
Other verbs + on
hold on / hang on = wait
– (on the phone) Hold on a minute. I’ll see if Max is home.
move on = start a new activity, start talking about a new topic.
– (in a lecture) That’s enough about the political situation. Let’s move on to the economy.
take on a job / extra work / a responsibility = accept it and do what is necessary
– When Sally was sick, a friend took on her work at the office.
Verb = off
doze off / drop off / nod off = fall asleep
– The lecture wasn’t very interesting. In fact, I dozed off in the middle of it.
drop somebody/something off = take to a place by car and leave there
– Sue drops her children off at school before she goes to work every morning.
go off = explode
– A bomb went off in a hotel downtown, but fortunately nobody wa hurt.
Also an alarm can go off (= ring)
– Did you hear the alarm go off?
let someone off = stop employing someone because there isn’t enough work
– My brother was laid off two months ago and still hasn’t found another job.
rip somebody off = cheat somebody (informal)
– Did you really pay $2,000 for that painting? I think you were repped off.
(= you paid too much)
show off = try to impress people with your ability, your knowledge, etc.
– Look at that boy on the bike riding with no hands. He’s just showing off.
tell somebody off = speak angrily to somebody because they did something wring.
– Clare’s mother told her off for wearing dirty shoes in the house.