In / out
Main uses of IN
• during, within, inside (place):
in the box inside the box
in England within the country of England
Get in the car. Go inside the car.
Bruno was in his office when Susie popped in. Bruno was in his office when Susie entered.
• When referring to a place, it is very important to distinguish between the use of in and to, which expresses an idea of movement or displacement towards a place:
I am in Australia / I am going to Australia
the airport in Melbourne / the flight to Melbourne
• When referring to inward movement, into
to dive into deep waters to dive and enter deep waters
• for dates, periods of time:
in the morning during the morning
in the summer during the summer
in two weeks (or in two weeks' time) two weeks from now
Main uses of OUT
• outside, towards the outside:
He got out of jail. He was released or he escaped from jail.
Out! Move away from here! Go outside!
• extension, dispersion:
The policemen spread out to find the criminals. The policemen dispersed to find the criminals.
• to make clear, to deduce, to understand:
Bob figured out how to use his new laptop. Bob understood how to use his new laptop.
I found out she was a millionaire so I asked for a more expensive present. I discovered she was actually a millionaire so I asked for a more expensive present.
The spy turned out to be a Kalvin Krime employee. We finally discovered the spy was a Kalvin Krime employee.
• exhaustion, total execution:
Jimmy ran out of money. Jimmy spent all his money.
Hear me out. Listen to everything I have to say.