> These illustrate the following properties of canonical clauses:
o They are positive; negative clauses like [ib] are non-canonical.
o They are declarative; interrogatives like [iib] are non-canonical, as are the other clause types: imperatives (e.g. Please stand up) and exclamatives (What a fool I've been).
o They are main clauses; the underlined clause in [iiib] is subordinate and hence non-canonical.
o They are non-coordinate; the two underlined clauses in [ivb] are coordinated and hence each of them is non-canonical.