Modal verb

The modal verbs in English are:

• can
• could
• dare
• may
• might
• must
• have to
• need
• ought
• shall
• should
• will
• would

Modal Verbs are basically the Secondary auxiliary verbs which are also called defective verbs because of their incomplete verb forms. Modals are used to change the mood of the main verb and they help to incorporate the element of necessity, obligation, capability and permission.