375. We do not always observe these niceties in our spoken and written speech, but it is interesting to know the shades of thought and meaning which you can express by the proper use of the language. The man who runs an engine and learns to know and love his machine almost as though it were a human being, can easily recognize the slightest change in the action of his machine. His ear catches the least difference in the sound of the running of the machine, a difference which we, who do not know and love the machine, would never notice.

So it is in language. Once we have sensed its beauty and its wondrous power of expression, we notice all these slight differences and shades of meaning which may be expressed by the use of words. In just the same manner the musician catches the undertones and overtones of the music, which we, who possess an uneducated ear, cannot know; and the artist also has a wondrous range of color, while we, who are not sensitive to color, know only a few of the primal colors.

ADJECTIVE CLAUSES WITH CONJUNCTIONS

376. The adjective clauses which we have been studying so far have been introduced by relative pronouns. Adjective clauses may also be introduced by conjunctions, such as, where, when, whence, or why. As, for example:

Note in these sentences the clauses, where a terrible battle was fought, when opportunity will be his, why this world-war was precipitated, are all adjective clauses modifying the nouns place, hour and reason, and are introduced by the conjunctions where, when, and why. These are adjective clauses because they modify, by either limiting or describing, the nouns with which they are used. You will note that we could omit the nouns in the first two of these sentences and these clauses would become noun clauses, for they would be used in the place of a noun. As, for example:

377. We determine whether a clause is an adjective or an adverb or a noun clause just as we determine whether a word is an adjective, adverb or noun, by the work which it does in a sentence. Noun clauses are used in the place of a noun; adverb clauses modify verbs, adjectives, and adverbs; adjective clauses modify nouns and pronouns.

THE LITTLE WORD "AS"

378. Adjective clauses may also be introduced by as. As is a very convenient word and may be used in several different ways; sometimes as an adverb, sometimes as a conjunction; and it may also be used as a relative pronoun after such, same and many. For example: