talk with a single person and speak with the group

The way of using take, for example can I take your book. It's a present tense. the way of using took,for example I took my bag .It,s a past tense. the way of using taken,for example I have been taken my things.

especially the way of using mine,for example these things are mine

The way of using when is a question to someone,for example when did you go. The way of using while,for example while we reached