特別聲明：該節目中的迷你對話選自口語書籍，其余講解部分均為可可原創。

迷你對話：

A: Who is on duty?

今天誰值班？

B: I am, sir.

我，先生。

A: Your duty is to keep a check on those prisoners from now on.

你的任務是從現在可是監視這些犯人。

B: Yes, sir.

是，先生。

地道表達：

keep a check on

解詞釋義：

check是名詞，意思是“檢查（以確保某事物正確，安全，滿意或處于良好狀況）”。Keep a check on直接翻譯就是“對......一直保持檢查”，意思即“監視”。

支持范例：

We had been kept a check on since nightfall.

從黃昏以來，我們就遭到監視。

They have keeping a check on John in case he escapes.

他們嚴密監視他，惟恐他會逃脫。

A policeman in plain clothes have kept a check on the criminal all day.

有個便衣警察整天秘密監視那個罪犯。

A policeman with plain clothes stood a dozen paces behind me, keeping a check on me.

一個穿便衣的警察站在我后面十幾步遠的地方監視著我。

詞海拾貝：

1. on duty：在上班，在值班

Eg. The rule is that someone must be on duty at all the time.

按照規定，任何時候均需有人值班。

Eg. Some nurses at the hospital are on duty all night.

這個醫院的一些護士整夜值班。

Eg. A policeman must not smoke while he is on duty.

警察當班值勤時不得抽煙。

Eg. Only one doctor is on duty today the other doctor is off duty.

今天只有一個醫生值班，另一位下班了。

2. from now on：從現在開始，今后

Eg. He's left school and will go to work from now on.

他已經中學畢業，從今以后就要工作了。

Eg. From now on your movements will be the subject of close attention.

從現在起，你的一舉一動將成為密切注意的目標。

Eg. This is the last time I go with you, from now on you must go alone.

這是最后一次我陪你了，以后你得自已去了。

Eg. I want you to be on your guard and watch your step from now on.

我要你注意檢點自己，從此以后，步步當心。