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Please help me on the questions below, which of the following sentences are correct?

From which shopping mall did you buy this cap?

Which shopping mall did you buy this cap from?

Which shopping mall did you buy this cap?

At which shopping mall did you buy this cap?

Which shopping mall did you buy this cap at?

Which shopping mall did you buy this cap?

Which floor are you on now?

On which floor are you now?

From where did you buy this?

Where did you buy this from?

Where did you buy this?

How long/How many days do you want to hire this car?

For how long/how many days do you want to hire this car?

How long/How many days would you like to apply for your visa?

For how long/how many days would you like to apply for your visa?

Your help will be greatly appreciated.
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Clive,

I have seen the sentence below, are correct? What is the diffence between how longand for long how? Please explain further.

How long did you wait?

How long have you been waiting?

How long have you been in England?

How long are you going to be in the bathroom?

2nd question,

Since when has he been missing?

=From when has he been missing? (Is it a correct sentence?)

3rd question,

There was an acticle on you? (Is it correct)

There was an acticle about you? (Is it correct)

Usually I see people use 'on' between noun and something, can I use 'on' between noun and somebody like the first sentence? If it is ok, can you give me some examples.

Thanks so much.

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Hi,

I have seen the sentences below, are they correct? Yes

What is the diffence between how long and for long how? There is usually no difference intended. Please explain further.

How long did you wait?

How long have you been waiting?

How long have you been in England?

How long are you going to be in the bathroom?

2nd question,

Since when has he been missing?

=From when has he been missing? (Is it a correct sentence?)

I wouldn't say these are wrong, but they sound awkward to me, particularly the second one.

I'd suggest

'How long has he been missing?'.

'When did people realize he was missing?'

3rd question,

There was an acticle on you? (Is it correct) Yes

There was an acticle about you? (Is it correct) Yes. I'd say this is more commonly said.

Usually I see people use 'on' between noun and something, can I use 'on' between noun and somebody like the first sentence? If it is ok, can you give me some examples.

I read a book on Napoleon.

I saw a documentary on penguins.

I wrote a magazine article on modern art.

Possibly 'on' stresses a bit more that this is the main topic. I 'm not sure .

Clive
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Comments  
Hi,

First, what do you think?

Clive
Clive,

I have heard all these sentences, so I am not sure which one or ones are correct, please help me on this. Thanks.
Hi,

Correct are in blue, as are comments.

which of the following sentences are correct?

From which shopping mall did you buy this cap?

Which shopping mall did you buy this cap from?

We usually buy things from a store, but at the mall.

Which shopping mall did you buy this cap?

At which shopping mall did you buy this cap?

Which shopping mall did you buy this cap at?

Which shopping mall did you buy this cap?

Which floor are you on now?

On which floor are you now?

From where did you buy this?

Where did you buy this from? Rather awkward

Where did you buy this?

How long/How many days do you want to hire this car?

For how long/how many days do you want to hire this car?

How long/How many days would you like to apply for your visa?

For how long/how many days would you like to apply for your visa?

How long would you like a visa for?

Clive
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Clive,

Let me ask you one more question,

in what case

in what cases

in which case

in which cases

Which are correct, and what is the difference between what and which? Thanks a lot.
Hi,

Let me ask you one more question,

in what case

in what cases

in which case

in which cases

Which are correct, and what is the difference between what and which?

The singular 'case' suggests I expect there to be only one such case.

The plural 'cases' suggests I expect there to be more than one.

'What' and 'which' can often be interchanged, but note this.

'Which' suggests all the cases may already have been identified, and I am asking you to choose.

'What' does not suggest this, so your amswer would have to contain more information.

Clive

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Clive,

Thanks a lot, but in the previous section, only the second sentence is right, the others are wrong? Please explain a bit more on this.

How long/How many days do you want to hire this car?

For how long/how many days do you want to hire this car?

How long/How many days would you like to apply for your visa?

For how long/how many days would you like to apply for your visa?

and I heard people say, 'How many years' contract did you sign with the company?' Is it ok to say this way?

Thanks.
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