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Hi teachers,

This is a sentence from a story:

Four policeman can watch his house and family, day and night - four hours on, and four hours off.

a) What is the meaning of 'four hours on, and four hours off'?

b) If I want to ask a question based on 'four hours on, and four hours off', which one should be?

And last one. Is it right the question according to the bold words in the answer?

c) When can the policeman watch his house and family?

They can watch it and his family day and night.

As always thanks in advance
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Thinking Spaina) What is the meaning of 'four hours on, and four hours off'?
Four hours on duty (watching) followed by four hours off duty (not watching), and then continue to repeat this pattern. Another way to say it is "in four-hour shifts".

This is the routine for any given policeman, I suppose. The exact distribution of shifts among the four policemen seems to be some sort of math problem which I am not going to attempt to solve!
Thinking SpainIf I want to ask a question based on 'four hours on, and four hours off', which one should it be?
You can't predict, in the general case, how your question will be answered. There is no sure way to elicit the answer "four hours on and four hours off". You might try, "What was the arrangement of shifts for the four policemen?"
Thinking SpainWhen can the policeman watch his house and family?
They can watch it and his family day and night.
It's policemen, by the way. Remember, there are four.

Here I have the same comment as above. There is no sure way to elicit certain answers because there are often so many different ways to say the same thing.

-- When can they watch his house and family?

-- They can watch them 24 hours a day.

-- When can they watch his house and family?

-- They can watch them day and night.

-- When can they watch his house and family?

-- They can watch them all day and all night.

-- When can they watch his house and family?

-- They can watch them around the clock.

-- When can they watch his house and family?

-- They can watch them continuously.

CJ
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Uaoooooooooo you must be an angel, in my opnion.Emotion: smile Your explanations are wonderful and your help is huge.

Thank you so much for what you do to me.

Have a nice weekend CJ

TS
Thinking SpainThank you so much for what you do to me.
(... do for me!)
You're welcome.
And you have a nice weekend too.

CJ
Thinking Spainin my opinion
You're a quick learner I see! Very good!

CJ
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