Definition of will modal verb from the Oxford Advanced Learner's Dictionary

      

    will

     modal verb
    modal verb
    BrE BrE//wɪl//
     
    ; NAmE NAmE//wɪl//
     
    Verb Forms present simple I / you / we / they will
    BrE BrE//wɪl//
     
    ; NAmE NAmE//wɪl//
     
    'll
    BrE BrE//l//
     
    ; NAmE NAmE//l//
     
    will notwon't
    BrE BrE//wəʊnt//
     
    ; NAmE NAmE//woʊnt//
     
    past simple would
    BrE weak form BrE//wəd//
     
    ; NAmE weak form NAmE//wəd//
     
    ; BrE strong form BrE//wʊd//
     
    ; NAmE strong form NAmE//wʊd//
     
    'd
    BrE BrE//d//
     
    ; NAmE NAmE//d//
     
    would notwouldn't
    BrE BrE//ˈwʊdnt//
     
    ; NAmE NAmE//ˈwʊdnt//
     
     
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  1. 1  used for talking about or predicting the future You'll be in time if you hurry. How long will you be staying in Paris? Fred said he'd be leaving soon. By next year all the money will have been spent.
  2. 2  used for showing that somebody is willing to do something I'll check this letter for you, if you want. They won't lend us any more money. He wouldn't come—he said he was too busy. We said we would keep them.
  3. 3  used for asking somebody to do something Will you send this letter for me, please? You'll water the plants while I'm away, won't you? I asked him if he wouldn't mind calling later.
  4. 4  used for ordering somebody to do something You'll do it this minute! Will you be quiet!
  5. 5  used for stating what you think is probably true That'll be the doctor now. You'll have had dinner already, I suppose.
  6. 6  used for stating what is generally true If it's made of wood it will float. Engines won't run without lubricants.
  7. 7  used for stating what is true or possible in a particular case This jar will hold a kilo. The door won't open!
  8. 8  used for talking about habits She'll listen to music, alone in her room, for hours. He would spend hours on the telephone. If you put extra stress on the word will or would in this meaning, it shows that the habit annoys youHe will comb his hair at the table, even though he knows I don't like it.
  9. Grammar Pointmodal 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. She will try and visit tomorrow. 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. You ought to stop smoking. I used to smoke but I gave up two years ago. Questions are formed without do/does in the present, or did in the past:Can I invite Mary? Should I have invited Mary? 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. Grammar Pointshall / will In modern English the traditional difference between shall and will has almost disappeared, and shall is not used very much at all, especially in North American English. Shall is now only used with I and we, and often sounds formal and old-fashioned. People are more likely to say: I’ll (= I will) be late and ‘You’ll (= you will) apologize immediately.’‘No I won’t!’ In British English shall is still used with I and we in questions or when you want to make a suggestion or an offer: What shall I wear to the party?Shall we order some coffee?I’ll drive, shall I? Word Originmodal verb Old English wyllan, of Germanic origin; related to Dutch willen, German wollen, from an Indo-European root shared by Latin velle ‘will, wish’.
See the Oxford Advanced American Dictionary entry: will