คำแนะนำของผู้เขียน
Modal verbs: can, could, should, must. Language functions: ability, possibility, inability, impossibility, obligation, prohibition, advice.
Modal verbs (can, could, should, must)
คำแนะนำของผู้เขียน
Modal verbs: can, could, should, must. Language functions: ability, possibility, inability, impossibility, obligation, prohibition, advice.