请假的英文：
ask for time off
ask for leave

参考例句：

The firm will consent to your taking a leave of absence.
公司会允许你请假。

Would you mind if I take tomorrow off?
你介意我明天请假吗?

How do you account for your long absence from classes without asking for leave?
你如何解释你不请假而长期缺课的行为？

Janet, let's get to the point. Do you want the afternoon off?
珍妮，有话直说吧。你下午想请假是不是?

in Russell's study, plants led eventually to a 60 per cent fall in absenteeism from work
Russell的研究揭示，植物最终使得上班请假率下降了60%。

Can I have the day off tomorrow ?
明天我可以请假吗？

He went to the office to ask for leave.
他到办公室去请假。

I think I'll take off from work for a few days.
我想请假离开几天。

Applications for leave must go through proper channels.
请假必须通过适当的途径。

"As far as I know , she did not ask for a day off . "
就我所知，她并没请假。

ask是什么意思：
v.[T]
1. 问；询问[+wh-]
2. 请求；要求[+to-v][+that]
3. 索（价）；要求得到(+for/of)
4. 邀请
v. [I]
1. 问；询问；问候(+about)
2. 要求；请求(+for)

Love asks faith, and faith asks firmness.
爱情要求忠诚，忠诚要求坚定。

Never ask questions which are not supposed to be asked.
永远不要去问不该问的问题。

Ask that lady to help you.
请那位小姐帮你忙吧。

time是什么意思：
n. 时间；（一段）时光；时机；机会；历史时期；时代；次；回；倍
v. 测定…所花时间；调准；调整；测定…所花时间
adj. 时间的；定时的；定期的；分期的

discrimination time
辨别时间辨别时间

It is time to go.
该走了。

They are not in step with the times.
他们跟不上时代的步伐。

off是什么意思：
adv. 掉，下；离开；隔开；切断；停止；；休息；光，完，尽；全部地
prep. 从...离开；从...向下；在...的外面；偏离...；从...分岔；不再从事...；低于...
adj. 关着的；停止流通的；延期的；取消的；不工作的；处于...境况的；萧条的
v.（用于祈使句）走开，滚开；站开
n. 关掉

Is the water on or off?
自来水龙头开着还是关着？

The gilt is off.
幻想破灭了。

to nip off; to cut off; to break
掐断