Modals in The Past Form

Modals in the past form in the Indonesian language is the word auxiliary modality in the past tense.
Modals in the past are :
1. Could
2. Would
3. Should
4. Shall

*Could + Verb base
We can use this expression : to offer suggestion or possibilities.
Example :
Nia : I’m having trouble with math.
Rizki : Why don’t you ask Novita ?
Perhaps she could help you.

*Might + Verb base
Use might to tell possibillities.
Example :
Helda : Why is Rio taking the bus to get home.
Fany : He might get a flat time.

*Would + verb base
Use would for an action that was repeated regulary in the past.
Example :
Yoan : What did you usually do on holidays ?
Lia : I would visit my grandparents In the village, but how not anymore.

*Would + Mind + V-ing
Use would to express polite request.
Example :
Mrs. Lady : Would you mind posting the letter ?
Nita : No, Not at all.

*Should + Verb base
Example :
Nisa : Ima , you should go to library now ?
Ima : O.k.