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Dear all,

Please see the following sentences. I saw these sentences in a video explaining various uses of 'should'. But regarding the following sentences, they are not being explained in which contexts they can be used. I think that the context of the first sentence may be (a) Instead of going to work, Alex simply hanging out with his friends. Being a well wisher of Alex I am saying to his friend "Alex should be at work now". I am unsure about its correctness. But regarding the second sentence, I can't find a suitable context. I'd like to get your opinion on this.

Alex should be at work now.
It is amazing that Alex should run so fast.
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cat navy 425Alex should be at work now.
I think that the context of the first sentence may be (a) Instead of going to work, Alex is simply hanging out with his friends.

Right. He ought to be at work, but he isn't.

The sentence can also be used in a different sense, to express the speaker's belief, based on indirect evidence, e.g. knowledge of Alex's usual routine, that Alex most likely is at work now.

cat navy 425It is amazing that Alex should run so fast.

This can be used if the speaker observes Alex running fast, or is told of Alex running fast. (This is in BrE. I am not sure whether this sentence would be used in AmE.)

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cat navy 425various uses of 'should'.

There are three basic uses of 'should'. Almost all occurrences of should fall into the first category. ought to may substitute for should in the first two categories.

1) advisory should

You should come and visit us. (advice)
> It would be a good idea for you to come and visit us.

2) expectational should

She should be here by now. (an expectation)
> She was expected to be here by now, but she's not here yet.

3) evaluative should

It's strange that she should be so late. (the evaluation of a fact)
> She is very late. That fact is strange.


EXAMPLES

Advisory

The city should do its best to attract a buyer for the property.
This man should be banned from ever having a dog again.
Should we apologize for not inviting their daughter?

Expectational

Even children as young as 12 months should be able to use these devices.
Freshly squeezed juice should be good for about a month if you keep it cold.
Sunny weather forecast for all this week should greatly improve fishing success.

Evaluative

It's alarming that the information on that website should be used in this way.
Why is it surprising that North Korea should be developing its own space capability?
Given that the budget has doubled since 1997, it is astonishing that there should be any shortfall in funding.

CJ

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Comments  
GPY(This is in BrE. I am not sure whether this sentence would be used in AmE.)

No. We rarely use "should" that way, but we understand it.

Sir, Thanks a lot.
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Thank you.
 CalifJim's reply was promoted to an answer.

CJ Sir, I understand now. Thanks a million. Actually, the "Evaluative should" was unknown to me. This is for the first time I have heard about it.

Thank you.

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