第1个回答 2007-11-06
modal
/ məudl; ˋmodl/ n (also modal verb, modal au`xiliary, modal au`xiliary verb) (grammar) verb that is used with another verb (not a modal) to express possibility, permission, obligation, etc 情态动词: `Can', `may', `might', `must' and `should' are all modals. can may might must should都是情态动词.