Question

my father slept soundly rewrite the sentence into nagetive and interrogative from​

Answer 1

Answer:

we use did because it is related to past indefinite tense

my father didn't sleep soundly.(negative)

did my father sleep soundly?(interrogative)

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Answer 2

Answer:

Interrogative: Did my father sleep soundly ?

Negative : My father did not sleep sundly.

Interrogative + Negative : Did my father not sleep soundly ?

Explanation:

Hope it will help. ☺️