This document discusses three conjunctions/prepositions - while, during, and for - and provides examples of their common uses in clauses and phrases. While is used to connect two actions happening simultaneously, during connects an action with a period of time, and for connects an action with a duration.
2. Followed by Example
conjuntion WHILE A clause While I was getting ready, I listened to
the radio.
I met my wife while I was at university.
preposition DURING A noun We had to call a doctor during the
(period of time) night.
Can I speak to you during the break?
preposition FOR A noun We talked for five minutes.
(how long We’re going on holiday for six weeks.
something lasts)