This tense is the root, or radical verb; and is usually preceded by the preposition to, which shows its relation to some other word: thus,
To love.
PERFECT TENSE.
This tense prefixes the auxiliary have to the perfect participle; and, like the infinitive present, is usually preceded by the preposition to: thus,
To have loved.
INDICATIVE MOOD.
The indicative mood is that form of the verb, which simply indicates or declares a thing, or asks a question. It is used in all the tenses.
PRESENT TENSE.
The present indicative, in its simple form, is essentially the same as the present infinitive, or radical verb; except that the verb be has am in the indicative.
1. The simple form of the present tense is varied thus:—