MODAL VERBS
CAN
Expresses ability or capacity to do something (know), possibility (can), and is also used to ask for permission or favors (can).
COULD
Expresses the same as can but in the past, although it is more suitable for asking for favors.
SHOULD
Used to give or ask for advice and to say what should or should not be done.
MUST
In affirmative, expresses obligation and the need or convenience of doing something (must). In negative, expresses prohibition or that something cannot be done because it is not correct to do it.
HAVE TO
(Have to) expresses the same as must, the difference is that it is conjugated, that's why it is used in tenses that must does not have.
NEED TO
Means the same as have to and since it can be conjugated, it is used in all verb... Continuar leyendo "Modal Verbs: Can, Could, Should, Must, Have to, Need to, May, Might" »