leave of absence：请假

I beg to apply for two weeks' leave of absence. 我请求准假两周。

He ask for leave of absence to visit his mother in hospital.他请假去探望住院的母亲。

Peter obtained a leave of absence from the university. 彼得从大学得到休假。

cast off：抛弃，丢弃

She' s cast off three boy-friends in a month. 她一个月里就甩了叁个男朋友。

The criminal was determined to cast off his old self and turn over a new leaf. 这个罪犯决心脱胎换骨，重新做人。

rush off ：仓促离开

I have to rush off to class now. Bye. 现在我得赶去上课了。再见。

Oh, I'm sorry to have to rush off like this, but I'll see you again soon, anyway.哦,十分抱歉,我就这样匆忙走掉了,但是,无论如何我会很快地来看你的。

up to：胜任的

I'm not quite up to it 我大懂这个。

dying wish：遗愿

return to：返回

say goodbye：道别