…an auxiliary verb that expresses necessity or possibility. English modal verbs include must, shall, will, should, would, can, could, may, and might…
…a verb that functions to some extent like a modal verb, typically in the way it forms negative and interrogative constructions. English semi-modals include need and dare…
…involving two or more different modes of transport in conveying goods…
…characterized by several different modes of activity or occurrence…
