Question

change into negative sentences. let's play
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Answer 1

Answer:

don't play please like

Answer 2

Answer:- let's not toil.

Here toil is the opposite word of play in case of enjoyment, you can use many words which should the opposite word of play, but one thing remember don't write "let's not play" as it will change the meaning of the sentence as it is one of the part of transformation of sentence. If it is not said not to change the meaning and simply to transform then you can write such sentence but I know they not instruct like this but however I think this is your answer mate.

I hope this helps you Buddy.......