Dear Richard & Rachel

Please , I have some questions about the following sentence.

- I cannot give you the exact date of my arrival
yet.

1) Is it a British or American English?

2) What is the tense of the sentence? Present
simple?

3) Is using " yet " correct in the sentence?
Please tell me why??

4) I know that " yet " is used with the present
perfect in British English but it can be used
in the present perfect or the past simple in
American English.Correct?

5) This sentence is neither present perfect nor
past simple! So, I wonder whether " yet " is
completely correct here?

I'm waiting for your kind reply. Thank you very
much.

Sayed

1 & 5) The sentence is fine in all varieties of English, Sayed.

2) Your example is in the present (cannot).

3) We have two adverbs that can both be used in negative sentences, still and yet.

We use still after the subject:
I still can't give you the exact date of my arrival.

We use yet at the end of the clause or sentence:
I can't give you the exact date of my arrival yet.

Some people feel a difference between the two adverbs when used in a negative sentence. They feel that if you use still, it shows that the listener has been waiting for something to happen. They think that using yet doesn't communicate this underlying idea. Of course, with the use of both adverbs in a negative sentence, there's still the anticipation that whatever is being discussed will take place.

4) Yes, Sayed, I believe the usage differences you've mentioned here between BrE and AmE are accurate for yet.