Етикет: Problem points

  • Need

    Need is used both as an ordinary verb and as an auxiliary verb.

    As an ordinary verb

    As an ordinary verb need is used in the sense of ‘require’. It has the usual forms needs and needed. Ordinary need is followed by an infinitive with to.

    • One needs to be punctual.
    • Everybody needs to be loved.
    • He needed some more time to decide the question.

    Questions and negatives are made with do.

    • Do you need to go now?
    • I don’t need to talk to him.

    As an auxiliary verb

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  • Ought to

    Ought is a modal auxiliary verb. There is no –s in the third person singular.

    • She ought to understand. (NOT She oughts to …)

    Ought is different from other auxiliary verbs. It is used with to

    • We ought to respect our parents.
    • We ought to help the poor.

    Note that to is dropped in question tags. (още…)

  • Must and Have to: The difference

    Both must and have to can be used to express the conclusion that something is certain. Note that have to is more common in American English.

    • He must be mad to do this. (OR He has to be mad to do this.)
    • You must be joking. (You have got to be joking.)

    Conclusions about the past are usually expressed with must followed by the perfect infinitive (have + past participle).

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