I am reviewing tenses right now: there are some really good worksheets online. It is often confusing to know what tense you have to apply, especially while talking. Anyhow, what's confusing me now is the really subtle difference between "will" and "going to".
A: I can't hear the television!
B: I (turn) will turn it up so you can hear it.
Ted: It is so hot in here!
Sarah: I (turn) will turn the air-conditioning on.
Both times "will" future is used, but i wonder why not " going to "? Because from my understanding is, that "going to" is used when you plan to do sth, and "will" for a prediction or an assumption.
Isn't it sure that you turn it on, same as in "I am going to college after i graduate "?
Also, could you say ... turn on the aircon or does it have to be.... turn the aircon on? Where do prepositions that come with a verb go?