Affirmative: They will/would have arrived home by now.
Negative: They won't/wouldn't have arrived home by now.

Affirmative: He will/would have reached New York.
Negative: He won't/wouldn't have reached New York.

I was trying to change the affirmative sentences into negative ones. Could you please check them out for me and see if they are right? Thank you very much!
Regular Member546
They seem fine to me. "wouldn't have arrived home yet" is also very common.
Veteran Member20,911
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Anonymous:
change into negative and introgative

she`has rubbed the board

you must have locked the doors
Anonymouschange into negative and introgative
she`has rubbed the board
you must have locked the doors
simultaneously?

Hasn't she rubbed the board?

Could you have not locked the doors?
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