adverbs like here – there – yonder, but also numerous adverbs identical in form to prepo-
sitions or derived originally from prepositional phrases (above, ahead, behind, outside,
upstairs etc.).
5.1.6 Prepositions
Prepositions are often close to adverbs because they, like adverbs, express time, place
and manner/modality. In addition, they are used for degree (over two hours, under twenty
pounds, about sixty years old) and comparison (like, as), subject matter (e.g. about) and
motivation/contingency (because, despite, in case of). As a group they are more a closed
than an open class, but it is hard to draw the line between complex prepositions and
similar constructions which are not prepositional. That is, the commonest simple prepo-
sitions, about, at, by, from, for, in, of, on, over, through, to, with, are clear cases, and so
are such highly fixed complex prepositions as in front of or in regard to. More marginal
are at the front of or in sight of. At the further extreme are clearly non-prepositional
constructions, such as in the considered opinion of or at the new shop of, which consist
of individual units joined by normal syntactic processes, which are signalled in part by
the presence of the article (the) and of an adjective (considered, new).
Prepositions have no inflectional morphology to define them. Perhaps the most satis-
factory criterion is positional: they are followed by an NP, together with which they form
a prepositional phrase (PP). This distinguishes them from (subordinating) conjunctions,
which are followed by clauses (preposition after the party vs conjunction after we left
the party). It also distinguishes them from adverbs, which are not followed by any partic-
ular types of word or phrase (preposition they dropped a letter in the box vs adverb they
dropped in). However, this also means that items such as e.g. or namely, must be included
because they are regularly followed by NPs, even though they are not traditionally consid-
ered to be prepositions.
5.1.7 Articles/determiners and conjunctions
These are the final parts of speech to be considered. They may be defined positionally by
their occurrence before (adjective and) noun, e.g. the large basket. Since there are only
two words which are articles, definite the and indefinite a/an, the simplest definition is
simply to name them. However, a large group of determiners might be included here.
These consist of: the demonstratives this, that, these, those; possessive determiners (my,
your, our, her etc.); interrogatives and relatives (what, which, whose etc.); and quantifiers
such as some, any, no, all, double, half, both, (n)either, each, every, many, more, most,
enough etc. as well as both cardinal (one, two, three, . . .) and ordinal (first, second, third,
. . .) numerals. They all share the feature of appearing before attributive adjectives as part
of an NP. Furthermore, they are subdivided by position into pre-determiners, central
determiners and post-determiners (see 5.5.2).
Conjunctions are basically of two types, coordinating (and, or, nor, but, yet, for) and
subordinating (e.g. after, because, although etc.). Both groups consist of relatively limited
sets. They include not only single word items but also double (correlative) forms such as
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GRAMMAR 105