Modal Verbs

Modal verbs are also known as: Helping verbs. They  give additional information about the main verb that follows them.

• True
• False

1.They do not have participle or infinitive forms.
2. They do not take the ending -(e)s in the third-person singular.
3. They do not have a past form: He can/he canted. She must/she musted.
4. The negative is formed by the addition of not/n’t: He cannot/ He can’t. NOT He don’t can.
5. Questions are formed by inversion with the subject:  Can you? NOT Do you can?

• Rules or Characteristics
• Use of ¨can¨
• Use of ¨must
• Use of ¨should¨

Is most commonly used to make recommendations or give advice. It can also be used to express obligation as well as expectation.

• can
• should
• must
• would

Is most commonly used to create conditional verb forms. It also serves as the past form of the modal verb "will." Additionally, "would" can indicate repetition in the past,

• should
• would
• have to
• can

Is one of the most commonly used modal verbs in English. It can be used to express ability or opportunity, to request or offer permission, and to show possibility or impossibility.

• could
• can
• should
• must

Is used to express certainty, necessity, and obligation.

• have to
• must

Negative form:

Jack           be upset. Perhaps he is tired.

• may not
• should not
• must not
• can not

affirmative form:
Julie        swim.

• can
• should
• have to
• may

1.  Jack ___________use his company car every day. He gets the permission from the boss. 

• has to
• may
• can
• must

You _____________ drive more carefully.

• may
• should
• shouldn´t