CHAPTER 1.  ADJECTIVES: POSITION IN A SENTENCE Words which are used to modify nouns or pronouns are usually referred to as adjectives. For instance, the adjectives in the following sentences are underlined. e.g. Large trees could be seen.       They are happy. In the preceding examples, the adjective large modifies the noun trees, and the adjective happy modifies the pronoun they. It should be noted that adjectives can be formed from two or more words combined by the use of hyphens. e.g. the three-month-old baby       a ninety-dollar jacket       a two-hour trip As illustrated in these examples, the nouns in such hyphenated expressions are generally in the singular. Thus, the singular forms of the nouns month, dollar and hour are used. Most English adjectives have the same form for the singular as for the plural. The only exceptions are the demonstrative adjectives this and that, discussed Chapter 19.  1. Proper adjectives Proper adjectives...