Keelefilosoofia raamat
speech act are species: The normal use of a declarative is to make a statement,
that of an interrogative is to seek information, and that of an imperative is to
issue a directive of some kind. But the correspondence is far from perfect:
(12) I want you to go to the Broccoli Festival with me.
(13) Can you pass the salt?
(14) Believe me when I say I'll never again mix Glenfiddich and
paregoric.
(15) Tell me how you saved Kate Winslett from the giant tree frog that
ate Pittsburgh.
(16) I want you to tell me what has become of my children three.
(12) is grammatically declarative but would normally be used to issue a
request or even an order. (13) is interrogative but would normally be heard,
not literally as an information-seeking question about the hearer's abilities,
but as a request also. The imperatives (14) and (15) would normally be used
respectively to make a statement and to ask a question
annaabi.ee 
