Modals (B2 p. GR15-GR16)

Must, should, ought to, may, might, can, could, would, etc are modal verbs.

• True

• False

Must expresses

• absence of necessity

• duty/ strong obligation

Should/ ought to express:

• duty/ weak obligation

• prohibition

Mustn't expresses

• prohibition

• advice

Can/ could express

• absence of necessity

• possibility

Can/ could/ was able to express:

• ability/ inability

• offers/ suggestions

Will/ should/ ought to express

• probability

• persmission/ prohibition

Logical assumptions/ deductions: must =

• almost certain

• possible

Logical assumptions/ deductions: may/ might/ could =

• almost certain

• possible

Logical assumptions/ deductions: can't/ couldn't =

• possible that this was true

• almost certain that this was impossible