If you are (t ) ,please lie down and have a rest.

If you are (t ) ,please lie down and have a rest.
If you are (t ) ,please lie down and have a rest.

If you are (t ) ,please lie down and have a rest.
If you are (tired ) ,please lie down and have a rest.
如果你累了,请躺下休息.

tired，即“劳累，疲倦”的意思。句意：如果你累了的话，请躺下来休息一会儿。