can / could
A1can / could + base verb„Can” is ability or possibility now; „could” is past ability or a softer, less certain form.
Examples
- I can swim.PLUmiem pływać.
- Could you help me?PLMógłbyś mi pomóc?polite request
Little words that add a shade: possibility, obligation, advice, politeness. Always a base verb after them.
„Can” is ability or possibility now; „could” is past ability or a softer, less certain form.
Both express obligation. Mind the negatives: „mustn't” = forbidden, „don't have to” = not necessary.
I must to go now.I must go now.
A modal verb (must, can, should) is followed by the bare infinitive — no „to”: „I must go”, not „I must to go”.
Advice or a suggestion — „you should”. Softer than „must”.
Possibility that isn't certain („maybe”). „May” can also be polite permission.
Hypothetical situations, polite offers and requests, and repeated past actions.