请 introduces a request; 别 introduces a negative instruction.
Introductory pattern#
请 + action; 别 + action
Worked teaching example#
请坐。别着急。
Please sit down. Do not worry or rush.
Practise the distinction#
Write a request for a familiar classroom action.
The example and exercise are newly written for this lesson. They do not report an event, interview or study. This introduction covers the displayed use, rather than all constructions involving the same words.
Reference#
Grammar reference. The reference supports the grammar point; no example sentence has been copied from it.