Finished watching the lesson, now it’s time to take a test to see how much have you learned from this lesson.
We use ‘for’ followed by a period of time to say how long something goes on :-
Example – We watched TV for 2 hours last night
Example – I am going to Spain for 2 weeks.
We use ‘during’ followed by noun to say when something happens (not how long)
Example – Nobody was vocal during the presentation.
Example – I fell asleep during the film and I slept for an hour.
We use ‘while’ followed by a subject and verb.
Example – We saw sam while waiting for the bus.
Example – I fell asleep while watching TV.
Also when talking about future we sometimes use the present (not will) but the word ‘while’.
Example – I will be in London next week, I hope to see John while I’m there.