Affirmative, interrogative and negative form

Verbs in English come in three main categories: the affirmative, the negative, and the interrogative.

The affirmative= asserting that something is true or valid.
The negative= a reply denying something.
The interrogative= asking a question.

Here’s an overview of how each category is structured for most verb tenses in the English language.

Verb Tense Affirmative Negative Interrogative
Present Simple I see you. I don’t see you. Do I see you?
Present continuous She is reading. She is not reading. Is she reading?
Past simple I cooked dinner. I didn’t cook dinner. Did I cook dinner?
Past simple continuous They were skiing. They weren’t skiing. Were they skiing?
Present perfect We have seen it. We haven’t seen it. Have we seen it?
Present perfect continuous We’ve been singing. We haven’t been singing. Have we been singing?
Past perfect She had studied. She hadn’t studied. Had she studied?
Past perfect continuous She had been studying. She hadn’t been studying. Had she been studying?
Future simple I will travel. I won’t travel. Will I travel?
Future simple continuous He will be travelling. He won’t be travelling. Will he be travelling?
Future perfect He will have finished. He won’t have finished. Will he have finished?
Future perfect continuous He will have been finishing. He won’t have been finishing. Will he have been finishing?
Conditional It would work I wouldn’t work. Would it work?
Conditional continuous They would be running. They wouldn’t be running. Would they be running?
Conditional perfect She would have been happy. She wouldn’t have been happy. Would she have been happy?