Question

always speak the truth (change in the negative form)

Answer 1

Hey there !

The sentence in its negative form, without any change in the meaning is-

Never speak a lie.

Hope it helps :-)

Answer 2

Answer:

Never speak a lie.

Explanation:

The affirmative sentences and negative sentences are opposite to each other. The former one describes the positive form of sentence and second one signifies the negative form of sentences. This category of affirmative and negative is said to be polarity.  

The affirmative sentences can be changed to negative without any change in meaning. When considering above sentence, the negation used is never, also we have used lie in the place of truth. This statement also signifies the speaking of truth, without changing the meaning.