require the pupils to distinguish them.

When I say, I _crush_ the worm, I express an action that is going on now,
or in present time. I _crushed_ the worm, expresses an action that took
place in past time. As _tense_ means _time_, we call the form _crush_ the
_present tense_ of the verb, and _crushed_ the _past tense_. In the
sentence, The worm _crushed_ under my foot died, _crushed_, expressing the
action as assumed, is, as you have already learned, a participle; and, as
the action is completed, we call it a _past participle_. Now notice that
_ed_ was added to _crush_, the verb in the present tense, to form the verb
in the past tense, and to form the past participle. Most verbs form their
past tense and their past participle by adding _ed_, and so we call such
+Regular verbs+.

I _see_ the man; I _saw_ the man; The man _seen_ by me ran away. I _catch_
fish in the brook; I _caught_ fish in the brook; The fish _caught_ in the
brook tasted good. Here the verbs _see_ and _catch_ do not form their past
tense and past participle by adding _ed_ to the present, and so we call
them _Irregular verbs_.

Let the teacher write on the board verbs of both classes, and require the
pupils to distinguish them.


DEFINITIONS.

CLASSES OF VERBS WITH RESPECT TO MEANING.

+A _Transitive Verb_ is one that requires an object+. [Footnote: The
_object_ of a transitive verb, that is, the name of the receiver of the