How do you know that the verb is regular?
There is just one answer to this question. You have to learn all the irregular verbs and then all the verbs that are not irregular are regular.
NOW, SOME PRACTICE:
HOW DO WE FORM THE NEGATIVE IN THE PAST???
WATCH THE VIDEO
WHICH IS THE CORRECT SENTENCE?
AND NOW.... QUESTIONS IN THE PAST!
(WH-WORD) + DID + SUBJECT + INFINITIVE (without "to")
Here you can practise the difference between present perfect simple and past simple tenses by playing some games. The first game is called Fling the teacher and you have to choose the correct option 15 times to win the game. You have to choose between present perfect simple and past simple tense. Good luck. Fling the teacher1 Fling the teacher 2
The last game is a quiz. Complete the gaps with present perfect or past simple tense and if you score more than 80% you will get to play a game called Angry Finches. Enjoy the game!!!