Question

Aunts are usually formidable creatures. ( Make it negative)

Answer 1

Aunts are not usually formidable creatures.

Answer 2

Aunts are not usually formidable creatures.

A negative sentence or statement states that something is not true. A negative adverb is added to negate the validity of the sentence. A negative sentence is formed by adding the word 'not' after the first auxiliary verb in the positive sentence. In case there is no auxiliary verb in the positive sentence, as in Present Simple and Past Simple tenses, then the auxiliary verb 'do' is added.

For example:

I play.  -  I do not play or I don't play.

She played.  -  She did not play or She didn't play.