Modal Verbs (Can, Must, Should, May) — Grammar Rules and Exercises — English 3rd Year Middle School — Algerian Curriculum الثالثة متوسط, تربية وتعليم, دروس المتوسط 0 Modal verbs are special auxiliary verbs that express ability, necessity, obligation, permission, or advice. They … أكمل القراءة » مشاركة Facebook Twitter