Foremost, I’m not claiming that my English grammar is perfect at all times.
I would just like to share one of the basic grammar errors that we often commit on constructing simple tense in the past form.
Basically, there are three ways in forming the past tense of an English verb:
1. the use of operator “did” plus the indicative
2. adding -ed or -d to the indicative, if the verb is regular or the special past tense form of certain verbs
3. putting the auxiliary of the continuous form in past tense
1. You did laugh
2. You laughed
3. You were laughing
With emphasis on the first one, the use of the operator “did” must be added to a present tense form of the verb and not of its past tense.
Correct: You did laugh
Incorrect: You did laughed
Correct: I did not notice
Incorrect: I did not noticed
Correct: I did not swim
Incorrect: I did swam
Did is already a past tense in its form so making the indicative in its past form too would make it redundant.
So there, that’s our English Grammar Review 101.