A. Classification of auxiliaries according to their inflection or non-inflectional powers.—Inflectional auxiliaries are those that may either replace or be replaced by an inflection. Thus—I am struck = the Latin ferior, and the Greek τύπτομαι. These auxiliaries are in the same relation to verbs that prepositions are to nouns. The inflectional auxiliaries are,—

1. Have; equivalent to an inflection in the way of tense—I have bitten = mo-mordi.

2. Shall; ditto. I shall call = voc-abo.

3. Will; ditto. I will call = voc-abo.

4. May; equivalent to an inflection in the way of mood. I am come that I may see = venio ut vid-eam.

5. Be; equivalent to an inflection in the way of voice. To be beaten = verberari, τύπτεσθαι.

6. Am, art, is, are; ditto. Also equivalent to an inflection in the way of tense. I am moving = move-o.

7. Was, were; ditto, ditto. I was beaten = ἐ-τύφθην. I was moving = move-bam.

Do, can, must, and let, are non-inflectional auxiliaries.

B. Classification of auxiliaries according to their