老板，我可以提早下班吗？

 　　先讲一下请假的理由，最常见的有自己生病、家人生病、去机场接人等等——>

　　I'm not feeling well.

　　我不太舒服。

　　I have a terrible headache.

　　我头痛得厉害。

　　I'm going to the dentist this afternoon.

　　今天下午我要去看牙医。

　　I have a doctor's appointment tomorrow at four.

　　明天4点我预约了医生。

　　I have to pick up my mom at the airport tomorrow.

　　明天我要去机场接我妈妈。

　　I have a conference¹ with my son's teacher tomorrow at three.

　　明天三点我要和我儿子的老师开会。

　　My daughter gets sick and I have to pick her up from school.

　　我女儿生病了，我要去学校接她。

　　然后再问一下老板是否OK——>

　　May I leave early today?

　　Is it OK if I leave early today?

　　Will it be OK if I go home early today?

　　我今天可以早点下班吗?

　　Is it OK if I leave at three?

　　我可以3点下班吗?

　　I have to leave at three. Will that be OK?

　　我3点离开可以吗?

　　Is it OK if I leave early tomorrow?

　　我明天可以早点下班吗?

　　Is it OK if I finish my work at home?

　　我可以在家办公吗?

1 conference   

n.（正式的）会议；讨论

参考例句：

• We're having a conference and we'd like you to sit in.我们将举行一次会议，希望你来旁听。
• The conference will come to a close this afternoon.今天下午会议闭幕。