Hi Shizuka,
Yes I think that’s a fair summary but it ignores the crucial exception of the verb “to be”, as negative statements can also be created with “to be” + not and no auxiliary. In these sentences, “to be” would work as a main verb, though it’s used as an auxiliary in the continuous tenses, so it’s an important exception.

Phil

I’m doing a set of slides for my homework to explain on the formation of negative constructions or sentences in various tenses in English. To seek your advice, for the simple past tense, is it right for me to say that:

The rule to form negative sentences for simple past tense is as follows:
Do not negate a main verb in English. Always use the auxiliary did (Simple Past of to do) and the infinitive of the verb for negations. In addition, there is no difference between regular and irregular verbs in negative sentences in that both use the combination “did + not + base form of verb”.

Regards,
Shizuka