The introduction is necessary because we need to know with someone else. When they meet for the first time. In English, the word it self must be steaming through appropriate and very familiar. The introduction of a formal and an informal
The introduction is necessary because we need to know the other person. As well as the first time. English said it's taken. The consideration to be appropriate. And intimately familiar to me, I take it as an official and unofficial.
An introduction is necessary because we have to get to know other people when we meet the first time. In English the recommendations. To the one to suit and familiarity, introduce yourself, push.And informal.