情态动词虽然数量不多，但用途广泛，主要有下列： can (could), may (might), must, need, ought to, dare (dared), shall (should), will (would) must not.can(could),may(might),must,need,oughtto,dare(dared),shall(should),will(would)mustnot., shall (should), will (would) must not.
情态动词有哪些