xx老师/领导：

        我因xx事，需要请假xx天，请批准。

                                                                                                                               请假人：xxx

                                                                                                                            日期：xx年xx月xx日

xx老师/公司领导：

        我因身体不适，需要请假xx天，请批准。

                                                                                                                                请假人：xxx

                                                                                                                                日期：xx月xx日