Modifier vs. Complement
Syntax
Linguistics 222/322
Contents: PP Modifiers | Ordering Test | Relative Clause Replacement Test | Psuedo-cleft Test | Stranded Preposition Test | Conjunction Test | Predicate Separation Test | Omission Test | WH-Word Conjunction Test
Be sure to read the section on complements: Complements
PPs may be adjoined to both NP and VP or they may function as a complement to either category. Given a phrase with a PP, it is not easy to determine the PP is a complement or a modifier. A couple of short items are useful in NPs:
For example:
There are at least seven tests which can be used to test for the difference between complements and modifiers. None of these tests works in all contexts. To test for complements and modifiers, one should succeed with at least two tests if at all possible.
Nouns (nominal heads)
1. Complements precede adjuncts
This test only works if there are two PPs. If there is one PP the test is useless. However, the following two statements are true because of the above test: if the second PP is a complement, then the first PP must be a complement t, and if the first PP is a modifier, then the second PP must be a modifier.
2. There is one test for PP modifiers of NPs: relative clause replacement. If a PP can be replaced with a relative clause formed with some form of be or have, and there is no change in the meaning of the phrases except for the tense that the relative clause marks, then the PP is a modifier: Otherwise, it is a complement:
In (1), for example, the only diference in meaning is in tense. The copular verb is marks the present tense in the relative clause, but it is missing in the PP complement.
Note that there is the following construction:
This appears to be a counter example to the relative clause test. In the relative clause test, the relative clause should have the same meaning as the test PP with the exception of tense. Sentence (1) immediately above implies that the bottle was intended for something else--it just happens to have some wine in it. Evidence to support this can be found in compounds of the following type:
The left member of the compound implies the function of the bottle--for wine. Such compounds do not take complements:
But the compound can be modified by a modifier:
Thus there is close link between the head and its complement. Here, it is one of intention or purpose.
3. Complement restriction
A noun that takes a complement can take a restricted number of complements as determined by their subcategorization properties. For example, container nouns can take only one complement:
An indefinite number of modifies may modify a noun. This number is determined by performance factors:
Note that modifiers can modify most preceding nouns in the string restricted only by semantics. For example next to the toaster can modify table or cup but is unlikely to modify kitchen since rooms are not usually located next to an implement. Similarly, it isn't the coffee per se that is next to the toaster, but the cup of it that is. That is, the following is unacceptable:
Verbs
The following is an example of a normal sentence and a related pseudo-cleft sentence:
A pseudo-cleft construction consists of the following six parts:
Both do and be are inflected for tense--usually the same tense. The verb put takes two first level complements; neither complement can be omitted:
A first level complement of a verb cannot occur in the marked focus position of the pseudo-cleft construction:
Note the following interesting complement structure of two different meaning of the verb place:
Place in (1) takes two complements; in (2) it takes one complement:
At the races is a modifier which says where the placing of the bed took place. It occurs in the marked focus position of the pseudo-cleft construction.
Adjunct modifiers and second level complements can occur in the marked focus position:
The last two sentences contain second level complements. Second level complements not as tightly linked to the verb semantically as first level complements. Second level complements include agents, instruments, and a few other theta roles (see theta roles). Secondary level complements are modifiers incorporated into the verb and thus function like complements.
2. The stranded preposition test.
As opposed to pure modifiers, complements are incorporated into the meaning of the verb (or noun). There is one test for complements, but the test does not go far enough--preposition stranding. A stranded preposition is a transitive preposition that remains when its complement has been repositioned (moved):
Stranded prepositions are possible if the preposition heads a complement PP at both first level and second levels:
Stranded prepositions are not possible if the preposition heads an adjunct PP. This is always true for temporal PPs, and true for locative PPs that follow another PP:
However, some prepositions that head an adjunct may be stranded if they do not follow another PP:
The evidence here is negative evidence. If a preposition cannot be stranded, then it is an adjunct. If it can be stranded, other tests must be made to determine whether the PP is an adjunct or not.
As we noted above, complements tend to mark purpose. For example:
(1) sounds quite odd since the purpose of a bed is to sleep in. (2) sounds quite odd since the purpose of a pajamas is to sleep in. Compare these sentences with the following:
These sentences do not sound odd because a couch is not intended to sleep on, and pajamas are not intended to drive ones kids to school in. In the purpose or intent reading , incorporation appears to have taken place. That is, in bed or in ones pajamas are incorporated into the meaning of the verb as propose. It may be the case that all stranded locative prepositions may have been incorporated as intent or purpose, thus become level two complements. Level one complements are inherent and not incorporated. If this is the case, then the distinction between adjunct and complement is less fuzzy.
3. The conjunction test: an adjunct and a complement may not be conjoined.
Two complements of N or V may be conjoined:
Two adjuncts may be conjoined:
But one or more of each may not be conjoined:
4. The predicate separation test
In related constructions an adjunct may occur in the predicate construction of a sentence; adjuncts may not:
What is interesting in this construction is that any modifier (with a few exceptions based on semantics) can occur in the predicate separated from the noun it modifies:
A predicate adjective can be transposed as a premodifier. Note that the information content of 1 and 3 immediately above is the same. Only the prominence changes (the way the speaker is looking at the information). PPs can do the same thing:
Relative clauses are also modifiers and they have the same property:
There is a small class of prenominal adjectives that cannot occur in predicate position:
Some predicate adjectives can occur as prenominal modifiers:
In the third example afloat is a predicate adjective in a relative clause which is OK. Note also that a relative clause with a main verb can also become the main predicate losing the relative pronoun:
If the form in question can be separated as shown above then the form is an adjunct (modifier). If it cannot it either a complement (if it follows the noun) or it is prenominal modifier with special properties.
The omission test tests for complements. It not useful for adjuncts. If the constituent in question cannot be deleted, it is a complement. All adjuncts are optional. Some complements can be omitted and some cannot:
Syntax and conceptual structures is the complement of like. The phrase cannot be deleted as shown in (2) and (4). This is evidence that the constituent is a complement since it is required. The complement of eat may be deleted as shown in (5) and (7). The two time PPs may be deleted with any verb. However, since dinosaurs, which is a complement, can be omitted, omission is no test. Only the failure of omission is a test.
6. The Wh-word conjunction test
Wh-words are pronominal forms that replace NPs and PPs and are intended to seek information in standard clauses and are modifier links in relative clauses. NP Wh-words and PP Wh-words include:
The Wh-word which is a D (or a prenominal modifier).
If two Wh-words refer to complements with different theta roles, they cannot be conjoined:
Two adjunct Wh-words may be conjoined even though they may bear different theta-roles:
In the latter example where is a complement of put, but when is a temporal adjunct. They cannot be conjoined. In the preceding example, both where and when are adjuncts. To use this test on a PP, replace the PP with the appropriate Wh-word, and then try to conjoin it with an adjunct Wh-word and then a complement Wh-word. If conjunction works, both are adjuncts. If it doesn't, at least one of them is a complement.
For example, suppose you want to know whether "on the edge of the frying pan" is a complement or an adjunct in:
In the kitchen is clearly a complement. So replace in the kitchen with where and on the edge of the frying pan with on what:
The latter sentence is possible if on what refers to the location of the event of breaking an egg:
Where this sentence means that Maggie was standing on the chair and somehow broke an egg. In the target sentence above, on the edge of the frying pan is an instrument+locative.
Contents: PP Modifiers | Ordering Test | Relative Clause Replacement Test | Psuedo-cleft Test | Stranded Preposition Test | Conjunction Test | Predicate Separation Test | Omission Test | WH-Word Conjunction Test
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This page last updated 31 JA 2000