FUNCTIONS IN PHRASES (functions_in_prhases.doc)

The syntactic functions which we looked at in the last section -- Subject, Object, Predicate, Adjunct, etc -- are all functions within sentences or clauses. We saw, for instance, that most sentences can be divided into two main functional constituents, the Subject and the Predicate:

Within the Predicate, too, constituents perform various functions -- in [3], for example, going to the cinema performs the function of Direct Object, while in [4], late performs the function of Adjunct. In each of these cases, we are referring to the roles which these constituents perform in the sentence or clause.

We can also assign functions to the constituents of a phrase. Recall that we have said that all phrases have the following generalised structure:

(pre-Head string) --- Head --- (post-Head string)

where the parentheses denote optional elements.

In this section, we will consider the functions of these parts of a phrase -- what roles do they perform in the phrase as a whole?

We will begin by looking at functions within verb phrases.

Complements

Consider the bracketed verb phrase in the following sentence:

David [VP plays the piano]

In formal terms, we can analyse this VP using the familiar three-part structure:

Let us now consider the functions of each of these three parts.

Actually, we already know the function of one of the parts -- the word plays functions as the Head of this VP. The term "Head" is a functional label, indicated by the capital (upper case) letter. Remember that we also capitalize the other functions -- Subject, Object, Predicate, etc.

Turning now to the post-Head string the piano, we can see that it completes the meaning of the Head plays. In functional terms, we refer to this string as the COMPLEMENT of the Head. Here are some more examples of Complements in verb phrases:

In each case, the Complement completes the meaning of the Head, so there is a strong syntactic link between these two strings.

At this point you may be wondering why we do not simply say that these post-Head strings are Direct Objects. Why do we need the further term Complement?

The string which completes the meaning of the Head is not always a Direct Object. Consider the following:

She [VP told me]

Here the post-Head string (the Complement) is an Indirect Object. With ditransitive verbs, two Objects appear:

We [VP gave James a present]

Here, the meaning of the Head gave is completed by two strings -- James and a present. Each string is a Complement of the Head gave.

Finally, consider verb phrases in which the Head is a form of the verb be:

David [VP is a musician]
Amy [VP is clever]
Our car [VP is in the carpark]

The post-Head strings here are neither Direct Objects nor Indirect Objects. The verb be is known as a COPULAR verb. It takes a special type of Complement which we will refer to generally as a COPULAR COMPLEMENT. There is a small number of other copular verbs. In the following examples, we have highlighted the Head, and italicised the Complement:

Our teacher [VP became angry]
Your sister [VP seems upset]
All the players [VP felt very tired] after the game
That [VP sounds great]

It is clear from this that we require the general term Complement to encompass all post-Head strings, regardless of their type. In verb phrases, a wide range of Complements can appear, but in all cases there is a strong syntactic link between the Complement and the Head. The Complement is that part of the VP which is required to complete the meaning of the Head.

Complements in other Phrase Types

Complements also occur in all of the other phrase types. We exemplify each type in the following table:

Adverb phrases are very limited in the Complements they can take. In fact, they generally occur without any Complement.

Noun phrases which take Complements generally have an abstract noun as their Head, and they often have a verbal counterpart:

Adjuncts in Phrases

The term "Complement" is not simply another word for the "post-Head string" -- post-Head strings are not always Complements. This is because the post-Head string is not always required to complete the meaning of the Head. Consider:

[NP My sister, who will be twenty next week,] has got a new job.

Here the relative clause who will be twenty next week is certainly a post-Head string, but it is not a Complement. Notice that it contributes additional but optional information about the Head sister. In this example, the post-Head string is an ADJUNCT. Like the other Adjuncts we looked at earlier, it contributes additional, optional information.

Adjuncts can occur in all the phrase types, and they may occur both before and after the Head. The following table shows examples of each type:

Complements and Adjuncts Compared

Complements differ from Adjuncts in two important respects:

1. Complements immediately follow the HeadIn most phrases, the Complement must immediately follow the Head:

David [VP plays [Complement the piano] [Adjunct beautifully ]]

In contrast, the reverse order is not possible:

*David [VP plays [Adjunct beautifully] [Complement the piano]]

Similarly:

fond [Complement of biscuits] [Adjunct with coffee]

~*fond [Adjunct with coffee] [Complement of biscuits]

Complements, then, bear a much closer relationship to the Head than Adjuncts do.

2. Adjuncts are "stackable"

In theory at least, we can "stack" an indefinite number of Adjuncts, one after another, within a phrase. For example, consider the NP:

In contrast with this, phrases are limited in the number of Complements that they can take. In fact, they usually have only one Complement. Ditransitive verb phrases are an exception to this. Recall that they take two Complements:

We [VP gave [Complement James] [Complement a present]]

Specifiers

Adjuncts can appear before the Head of a phrase, as well as after the Head. For example, in the following NP, the Adjunct sudden is part of what we have been calling the pre-Head string:

In this section we will look at the function of the remaining part of the pre-Head string. In this example, what is the function of the in the phrase as a whole?

We refer to this part of the phrase as the SPECIFIER of the phrase. Again, Specifiers may occur in all the major phrase types, and we exemplify them in the following table:  

An important point about Specifiers is that they relate to the Head + Complement sequence, and not to the Head alone. For example, in the AP very fond of animals , the Specifier very relates to fond of animals, not just to fond:

Amy is very fond of animals

Q. Amy is very what?

A. *Fond

A. Fond of animals

In functional terms, then, the three-part structure of a phrase can be summarised as:

(Specifier) -- [Head -- (Complement)]