Spoken English 11 simple past tense

Kinds of Sentences (Past indefinite)
1.Affirmative Sentence – We forgot that.
2.Negative Sentence – We didn’t forget that.
3.Interrogative Sentence (yes/no questions) –
 Did we forget that?
4.Interrogative-Negative Sentence –
Didn’t we forget that?
5. ‘WH’ Questions (Interrogatives) –
How did we forget that?
6. ‘WH’ Interrogative-Negative –
Why didn’t we forget that?