Hello!
 
Here are this week’s English tips.
 
We use during + noun.
We use while + verb.
 
We didn’t speak during the movie.
They sent many messages during the period they were away.
The students were bored during the lecture.
 
We didn’t speak while we were watching the movie.
He phoned while you were in the shower.
Do you listen to the radio while you study?
 
We use for + a period of time (one day, two weeks, three months):
 
We studied for 6 hours.
I worked in that firm for 4 years.
I watched TV for 3 hours. 
 
Have a great week.