CAN, COULD, MIGHT, MUST, SHOULD, WILL, WOULD
They have certain things in common:
1. They help another verb. the verb form is the infinitive without to.
ex: She can drive. I must get my hair cut
2. There is no do/does in the question.
ex: can she sing?. Should I go home now?
3. The form is the same for all persons. there is no -s in the third person singular.
ex: He can dance very well. She should try harder.
4. the form negative, add n´t. there is no don´t/doesn´t
ex: I wouldn´t like to be a teacher. you mustn´t steel
5. Most modal verbs refer to the present and future. only can has a past tense form, could
ex: I could swim when I was three
They have certain things in common:
1. They help another verb. the verb form is the infinitive without to.
ex: She can drive. I must get my hair cut
2. There is no do/does in the question.
ex: can she sing?. Should I go home now?
3. The form is the same for all persons. there is no -s in the third person singular.
ex: He can dance very well. She should try harder.
4. the form negative, add n´t. there is no don´t/doesn´t
ex: I wouldn´t like to be a teacher. you mustn´t steel
5. Most modal verbs refer to the present and future. only can has a past tense form, could
ex: I could swim when I was three
