Question

He tried all plans.(Change into negative)

Answer 1

He did not try all plans. Here you can get negative answer for this question and it is quite simple to change into the form the negative answer.

On the other hand you need to add the not in the given sentence and change into the negative plan with no trouble of it.

Answer 2

Hey there!

--------

Q. He tried all plans. (Affirmative Sentence)

=> He left all plans untried. (Negative Sentence)

________________________

→ Affirmative Sentence -: It includes positive information about something happening.

∴ For Example - He is a good boy.

→ Negative Sentence -: It includes negative information about something happening.

∴ Example - He is not a good boy.

________________________