Question

he must be happy- transform into negative​

Answer 1

hope it helps..please mark as brainliest

with not : he must not be happy

without changing meaning : he must not be sad

Answer 2

He must be sad is the negative of He must be happy.

Negative sentences have negative impact so to change positive to negative we have to change the positive word

Hope it helps;Pls mark as brainliest answer