how do they differ in the endings of -ir and -er
The endings of -ir and -er verbs differ in the conjugation patterns and the specific endings used for each verb type.
Here are the conjugation patterns for regular -ir and -er verbs in the present tense for the singular pronoun forms (I, you, he/she/it):
-ir verbs:
- yo (I): -o
- tú (you): -es
- él/ella (he/she/it): -e
-er verbs:
- yo (I): -o
- tú (you): -es
- él/ella (he/she/it): -e
As you can see, the endings for both verb types are the same in the present tense forms for the singular pronoun subjects.
However, there are some differences in the endings for certain forms and verb types in other tenses. For example, in the preterite past tense, -ir verbs have different endings than -er verbs:
-ir verbs in preterite:
- yo (I): -í
- tú (you): -iste
- él/ella (he/she/it): -ió
-er verbs in preterite:
- yo (I): -í
- tú (you): -iste
- él/ella (he/she/it): -ió
In this case, both -ir and -er verbs have the same endings in the preterite tense for the singular pronoun forms.
It's important to note that irregular verbs may have different endings altogether and might not follow these regular patterns.