Английский язык. Иваненко Т.И. - 40 стр.

    At the proper time
                     GRAMMAR IN USE

              MODAL VERBS: CAN MAY MUST

     Modals have some meanings. If you want to demand that
something happens, or that someone does something (=to express
obligation), use MUST.
     Example I must write a letter to Mr. Blake now
     If you want to give or ask for permission, use CAN or
MAY. MAY is more polite or formal than CAN.
     Example I can’t make an appointment with Mr. Green
now. Customers may purchase extra copies at half price.

    EXERCISE 3. Ask and answer using the modals: can, may,
must. Use the models.

Model 1
     – Can you write a letter to Dunn &Co. now?
     – I’ve already written it.
     Prompts: to invite the businessmen to the conference room;
to study the catalogues for office equipment; to show Mr. Blake
our quotation; to call the manager of Dunn & Co; to tell the Direc-
tor about the talks with Blake & Co; to fax the contract to Johnson
and Co.

Model 2
    – Must you make an appointment with Mr. Green?
    – Yes, I must.
    Prompts: to study foreign languages; to go to the office every
day; to have talks in English; to look through the post every
month, to help your wife at home.

    EXERCISE 4. Translate the sentences using the modal verbs.
Ask a general question and some special questions to every sentence.

    1. A manager nowadays must gather considerable evidence

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