Polite requests
Would you mind … ?
Please can you … ?
Direct instructions
The ... need(s) ...
Under no circumstances …
Friendly offers
Help yourself to ...
Feel free to …
https://339efcb25eb75e967b0d-ff8eeadd950d51fd1fc939dca75b3973.ssl.cf1.rackcdn.com/assets_default.swf