Did you have any luck in finding the book?

Do you have any luck in finding the book?
I would like to know about the usage.(If acceptable)

From my viewpoint, did you have any luck in finding the book is used after the searching was completed.

''Do...'' is used when the searching is still going on.

Sam completed his work.

His work is complete. (adjective)

His work was completed. (passive)

Sam did not complete his work.

His work has not been completed.

He has not completed his work.

May I know if all of the sentences above are correct?

Is completed an adjective? Can I use His work is completed?

Thanks in advance.

This is off-topic. But

I flex/bend my finger. (which one is correct?)
Did you have any luck in finding the book? -- Yes.

Do you have any luck in finding the book?-- No.

Are you having any luck in finding the book?-- Yes.

From my viewpoint, did you have any luck in finding the book is used after the searching was completed.-- Yes, or given up.

''Do...'' is used when the searching is still going on.-- No; it is used for universal non-past: Do you have any luck when you look for books (every time, etc)?

Sam completed his work.

His work is complete. (adjective)

His work was completed. (passive)

Sam did not complete his work.

His work has not been completed.

He has not completed his work.

May I know if all of the sentences above are correct?-- Yes, they are.

Is completed an adjective? Can I use His work is completed?-- Yes.

I flex/bend my finger. (which one is correct?)-- Try not to cast such sample sentences in simple present, because they usually sound odd (like your 'Do you have any luck' example above).

I flexed/bent my finger. -- Both of these are natural.
Hi,

Did you have any luck in finding the book?

Do you have any luck in finding the book?
I would like to know about the usage.(If acceptable)

From my viewpoint, did you have any luck in finding the book is used after the searching was completed. Yes

''Do...'' is used when the searching is still going on. No. Say 'Are you having any luck in finding the book?'

Your question with 'do' relates more to habit,

eg Every time you lose a book, do you have any luck in finding it?'on

Sam completed his work.

His work is complete. (adjective)

His work was completed. (passive)

Sam did not complete his work.

His work has not been completed.

He has not completed his work.

May I know if all of the sentences above are correct? Yes

Is completed an adjective? Can I use His work is completed? Yes.

This is off-topic. But

I flex/bend my finger. (which one is correct?)

Simple Present sounds like you are talking about your habit or routine, eg every day.

Both words are correct, but 'flex' to me suggests that you repeat the action several times.

Clive
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Oh I see. Thank you for the replies.

I would just like to confirm do can be used to refer to as now and universal truth. Is this correct? So its meaning depends on the context?
Hi,

Yes.

Clive
michaeltingI would just like to confirm do can be used to refer to as now and universal truth. Is this correct? So its meaning depends on the context?
'Do' seldom if ever refers to Now in simple present, nor do most action verbs. The verbs that refer to Now are primarily verbs of being, possession, sensation, etc, like feel, see, have, be, seem.
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