May I ask for a coupe of days off?　
       我能請(qǐng)幾天假嗎？

I have to ask for leave tomorrow morning. 

我明天上午不得不請(qǐng)假了。

I would like to take today off and hope you can approve it. I apologize for the short notice.

　　我今天想請(qǐng)假，希望您能批準(zhǔn)，對(duì)于這個(gè)臨時(shí)通知我表示十分的歉意。

I am planning to take the following week off for vacation, and would need your approval.

　　接下來的一周我打算去度假，希望您能批準(zhǔn)。

We have concluded our last project, but if you have additional tasks for me to do before my vacation, feel free to let me know.

　　我們已經(jīng)結(jié)束了最后一個(gè)項(xiàng)目，但如果在假期之前您有其他額外的工作需要我做，隨時(shí)通知我就行。

I think I may be coming down with a cold.

我覺得我沒準(zhǔn)是感冒了。

I came down with a fever/cold/the flue.

我發(fā)燒了/感冒了/得了流感。

I think I picked up a cold from someone at work.

我感覺自己是上班被人傳染才得了感冒。

I don't feel well this morning. Perhaps I ought to call in sick.

我今天早上感覺不太舒服，或許我該打電話請(qǐng)個(gè)假了。

 I am calling to ask for a sick day. I have caught the flu and am not feeling well enough to come in to work today.

　　我打電話來是想請(qǐng)個(gè)病假，我得了流感，而且感覺嚴(yán)重到今天無法上班了。

I'm afraid that I can't come in today due to a family emergency.

　　我今天家里有急事，恐怕來不了了。

I got some family issues that I need to take a day off.

我有些家庭問題要解決，需要請(qǐng)一天假。

I am taking off next Friday because I have a wedding to attend and have to catch the train early in the morning. I'd appreciate it if you could approve it.

　　我想請(qǐng)下周五的假，因?yàn)槲乙⒓右粋€(gè)婚禮并且清晨就要去趕火車，如果您同意的話我會(huì)十分感激。

Mr Smith, my dad's here visiting me and I'd like to take two days off to show him around the city.

史密斯先生，我爸爸要來看我，所以我想請(qǐng)兩天假，帶他到處轉(zhuǎn)轉(zhuǎn)。

My son's graduation is next Thursday on May 12th. I would like to be excused from work that day. Hope I can have your approval.

　　我的兒子5月12號(hào)畢業(yè)，也就是下周四。我想在那天請(qǐng)假，希望您能批準(zhǔn)。

Could you cover for me on Monday?

周一的班，你能替我嗎？

Can you finish it instead of me?

你能代我完成這個(gè)工作嗎？

Would it be possible if I switched my Tuesday shift for your Friday shift?

我想把周二的班和你周五的班換一下，可以嗎？

Can you take over my shift tomorrow?

       你明天能替我值班嗎？