An adjective
acts as the head of an adjectival phrase. In the simplest case, an adjectival phrase consists solely of the adjective; more complex adjectival phrases may contain one or more adverbs modifying the adjective ("very strong"), or one or more complements (such as "worth several dollars", "full of toys", or "eager to please"). In English, attributive adjectival phrases that include complements typically follow their subject ("an evildoer devoid of redeeming qualities").
In many languages, including English, it is possible for nouns to modify other nouns. Unlike adjectives, nouns acting as modifiers (called attributive nouns or noun adjuncts) are not predicative; a beautiful park is beautiful, but a car park is not "car". In English, the modifier often indicates origin ("Virginia reel"), purpose ("work clothes"), or semantic patient ("man eater"). However, it can generally indicate almost any semantic relationship. It is also common for adjectives to be derived from nouns, as in English boyish, birdlike, behavioral, famous, manly, angelic, and so on.
Many languages have special verbal forms called participles that can act as noun modifiers. In some languages, including English, there is a strong tendency for participles to evolve into adjectives. English examples of this include relieved (the past participle of the verb relieve, used as an adjective in sentences (such as "I am so relieved to see you"), spoken (as in "the spoken word"), and going (the present participle of the verb go, used as an adjective in sentences such as "Ten dollars per hour is the going rate").
Other constructs that often modify nouns include prepositional phrases (as in English "a rebel without a cause"), relative clauses (as in English "the man who wasn't there"), other adjective clauses (as in English "the bookstore where he worked"), and infinitive phrases (as in English "cake to die for").
In relation, many nouns take complements such as content clauses (as in English "the idea that I would do that"); these are not commonly considered modifiers, however.
Adjective order
In many languages, attributive adjectives usually occur in a specific order. Generally, the adjective order in English is;
1. article or pronouns used as adjectives
2. intensifier
3. quality
4. size
5. age
6. color
7. participle
8. proper adjective
9. noun used as adjectives
10. headnoun
So, in English, adjectives pertaining to size precede adjectives pertaining to age ("little old", not "old little"), which in turn generally precede adjectives pertaining to color ("old white", not "white old"). So, we would say "A nice (opinion) little (size) old (age) white (color) brick (material) house". However, some native speakers will say, "a big, ugly desk" (size, opinion) instead of "an ugly, big desk" (opinion, size), for example.
This order may be more rigid in some languages than others; in some, like Spanish, it may only be a default (unmarked) word order, with other orders being permissible to shift the emphasis.
Comparison of adjectives
In many languages, adjectives can be compared. In English, for example, we can say that a car is big, that it is bigger than another is, or that it is the biggest car of all. Not all adjectives lend themselves to comparison, however; for example, the English adjective extinct is not considered comparable, in that it does not make sense to describe one species as "more extinct" than another. However, even most non-comparable English adjectives are still sometimes compared; for example, one might say that a language about which nothing is known is "more extinct" than a well-documented language with surviving literature but no speakers. This is not a comparison of the degree of intensity of the adjective, but rather the degree to which the object fits the adjective's definition.
Comparable adjectives are also known as "gradable" adjectives, because they tend to allow grading adverbs such as very, rather, and so on.
Among languages that allow adjectives to be compared in this way, different approaches are used. Indeed, even within English, two different approaches are used: the suffixes -er and -est, and the words more and most. (In English, the general tendency is for shorter adjectives and adjectives from Anglo-Saxon to use -er and -est, and for longer adjectives and adjectives from French, Latin, Greek, and other languages to use more and most.) By either approach, English adjectives therefore have positive forms (big), comparative forms (bigger), and superlative forms (biggest). However, many other languages do not distinguish comparative from superlative forms.
In grammar, a clause is a pair or group of words that consist of a subject and a predicate, although in some languages and some types of clauses, the subject may not appear explicitly as a noun phrase. It may instead be marked on the verb (this is especially common in null subject languages). The most basic kind of sentence consists of a single clause; more complicated sentences may contain multiple clauses, including clauses contained within clauses.
CLAUSE
Clauses are often contrasted with phrases. Traditionally, a clause was said to have both a finite verb and its subject, whereas a phrase either contained a finite verb but not its subject (in which case it is a verb phrase) or did not contain a finite verb. Hence, in the sentence "I didn't know that the dog ran through the yard," "that the dog ran through the yard" is a clause, as is the sentence as a whole, while "the yard," "through the yard," "ran through the yard," and "the dog" are all phrases. However, modern linguists do not draw the same distinction, as they accept the idea of a non-finite clause, a clause that is organized around a non-finite verb.
