Sentence types

In every language one can make a statement, ask a question, or tell someone else what to do. Speakers of any language can accomplish these, and many other communicative acts, including suggestions, entreaties, threats, permissions, and expressions of surprise or dismay. Many of these communicative tasks have special grammatical structures reserved for them. A typical form of a statement is declarative, that of a question is interrogative, and that of a command, advice, good wish, and entreaty is imperative. In one language, each of these may have a special syntactic construction. In another, there may be a special particle or an affix.