6. Modal Verbs: An In-Depth Guide

What are Modal Verbs?

Modal verbs are auxiliary verbs that express necessity, possibility, permission, ability, and obligation. They modify the meaning of the main verb and provide additional information about the speaker's attitude towards the action.

Common Modal Verbs

• Can: ability or possibility
• Could: past ability or polite request
• May: permission or possibility
• Might: slight possibility
• Must: necessity or strong obligation
• Shall: suggestion or future intention (more common in British English)
• Should: advice or recommendation
• Will: future intention or strong promise
• Would: polite request or hypothetical situation

Uses of Modal Verbs

1. Ability
   • Examples:
     • I can swim. (present ability)
     • She could read when she was three. (past ability)
2. Possibility
   • Examples:
     • It may rain tomorrow. (possibility)
     • He might come to the party. (slight possibility)
3. Permission
   • Examples:
     • Can I leave early? (informal permission)
     • May I use your phone? (formal permission)
4. Obligation/Necessity
   • Examples:
     • You must wear a seatbelt. (strong obligation)
     • You should finish your homework. (advice)