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Dear teachers,

Would you please tell me if the following expressions are correct ?

1. There's plenty of time. Don't worry! The train doesn't leave BEFORE AN HOUR / FOR ANOTHER HOUR.

2. I'm sorry I CAN’T AFFORD THE TIME right now. I've got a plane

to catch.

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Hela
Another question please :

I've had to go the doctor about my eyes. I spend at least six hours a day in front of the/my (is MY possible here?) computer.

Both are ok. You can also say "I spend at least six hours in front of a computer", or, "I spend at least six hours at the/my/a computer".
Comments  
for = at some point in the duration of a period of time

before an hour has passed

for another hour = at some point in the duration of 1 hour from now till one hour later from now. OK

2 OK
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Another question please :

I've had to go the doctor about my eyes. I spend at least six hours a day in front of the/my (is MY possible here?) computer.
in front of the computer = it has been mentioned or is obvious from the conversation which computer I am referring to -- maybe mine, maybe not.

in front of my comp = it is my computer

Both are OK.
Thanks Emotion: smile
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 Tidus's reply was promoted to an answer.