الفصول الدراسية
The Grammar Book contains:
• Structures presented in
meaningful contexts
• Clear explanations and illustrative
examples
• Carefully graded exercises
• Communicative activities
• Oral and written practice
• Revision sections
Can, could, may, will, would, must, have to, need (to), etc. are modal verbs and:
• they do not form all the tenses.
• they are the same in all persons, singular and plural (except for need (to) and have to).
• they form the interrogative and the negative without
