| 释义 |
mod·al adjective /ˈməʊdl/ /ˈməʊdl/ (grammar) compare auxiliary- connected with the class of verbs such as can, may or will that are used with other verbs (not modals) to express possibility, permission, intention, etc.情态动词（如 can、may 或 will 等，和实义动词连用表示可能、许可、意图等）
Oxford Collocations DictionaryModal is used with these nouns:
mod·al noun /ˈməʊdl/ /ˈməʊdl/ (also modal verb, modal auxiliary, modal auxiliary verb) (grammar)- a verb such as can, may or will that is used with another verb (not a modal) to express possibility, permission, intention, etc.情态动词（如 can、may 或 will 等，和实义动词连用表示可能、许可、意图等）
Grammar Point modal verbsmodal verbs- The modal verbs are can, could, may, might, must, ought to, shall, should, will and would. Dare, need, have to and used to also share some of the features of modal verbs.
- Modal verbs have only one form. They have no -ing or -ed forms and do not add -s to the 3rd person singular form:
- He can speak three languages.他会说三种语言。
- She will try and visit tomorrow.她明天将设法去参观。
- Modal verbs are followed by the infinitive of another verb without to. The exceptions are ought to, have to and used to:
- You must find a job.你必须找到一份工作。
- You ought to stop smoking.你应当戒烟。
- I used to smoke but I gave up two years ago.我过去抽烟，但两年前就戒了。
- Questions are formed without do/does in the present, or did in the past:
- Can I invite Mary?我可以邀请玛丽吗？
- Should I have invited Mary?我本该邀请玛丽吗？
- Negative sentences are formed with not or the short form -n’t and do not use do/does or did.
You will find more help with how to use modal verbs at the dictionary entries for each verb. Topics Languagea2Word Originmid 16th cent.: from medieval Latin modalis, from Latin modus ‘measure’, from an Indo-European root shared by mete; compare with mood in its grammatical sense.
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