Assertion: verb's tense | /r/HasProperty | shown
Facets:
value: for contrasting purposes
type: PURPOSE
value: sometimes
type: TEMPORAL
value: by adding a helping verb
type: MANNER
Source sentences:
text: Tense is sometimes shown by changing the form of a verb, and sometimes by adding a helping verb.
text: The following examples show that all three conjugations (-ar, -er, and -ir verbs) include some diphthongizing verbs (only some tenses and persons are shown, for contrasting purposes):