do not = don't The “do not” is unnecessary in this phrase because “never” already negates the action. I also never stole it. (simple past) I have never stolen it. (past participle – better) When you say you never did something, it's better to use the past participle. This represents the fact you have never done something before in your life. The verb “steal” is irregular, so it changes to “stole” in the past and “stolen” in the past participle.

Hi, there are two huge problems in all three sentences - in fact, they are all incorrect. First, you have a "double negative": do not(don't) and never. They cancel each other out so in effect, the sentence "I do not also never steal it" reduces to a positive: "I also steal it." The second problem is that you want to write a negative sentence (I think?), but you're using the inclusive "also". For agreeing with a negative statement use "either". However, keeping this in the sentence makes it very confusing, as "either" can also mean "one or the other". Here are your corrected sentences: "I never steal." "I don't ever steal." (I'm not sure what you mean by "it". Money? By including "it", that means you don't steal that thing, but maybe you steal something else. Or, maybe it's something that other people usually steal.) "Do you never steal?" "I don't ever steal" is more emphatic than "I never steal". "Do you never steal?" implies that everyone else steals, why not you?

I also never stole it or I have never stole it