When you are asking someone to do something for you or trying to influence their actions, you can often show that you want to be polite by saying things in an indirect way:

Help me file these documents please. (Very Direct - more demand than request)

Please will you help me file these documents? (Less Direct)

Could you help me file these documents please? (Even Less Direct)

Do you think you could possibly help me file these documents? (Indirect)

I was wondering if you could possibly help me file these documents. (Very Indirect)

Generally speaking, the more indirect the expression you use, the more polite you will seem. If you are too direct you may be considered impolite. However, the more indirect expressions can sound "too polite". When deciding which expressions are suitable for which situations it is useful to ask certain questions.

  1. What is the relationship between the speaker and the listener? More direct expressions are often used between friends or when the speaker is in a position of authority.
  1. How important is the action to the speaker? Usually, the more important the action, the more indirect the expression.
  1. How much inconvenience will the action cause for the listener? If, for example, the listener is being asked to make a lot of effort or do something which they do not usually do, the speaker will probably use a more indirect expression.