NexoUsing verbs
Essential present-tense irregulars
Control stem changes and the high-frequency verbs that do not fit one regular pattern.
Irregularity can live in one form, in a stressed stem, or across the whole verb. Learn the smallest true pattern: stem-changing verbs preserve regular endings, many verbs have a special yo form, and pairs such as saber/conocer divide meaning rather than grammar alone.
The useful model
Start with meaning, then choose the form.
Irregular does not mean random. Querer and poder change their stressed stem vowel but keep regular present endings; tener, hacer, poner, venir, salir, and oír reveal smaller form-specific patterns worth naming directly.
Meaning can create a second decision. Saber refers to facts, information, and knowing how; conocer refers to familiarity with a person, place, or thing. The most useful habit is to identify both the form pattern and the message job.
Decision routine
Work through the message in a dependable order.
Locate the irregularity
Ask whether the change belongs to the stressed stem, only the yo form, or the whole present paradigm.
Preserve what remains regular
Keep the expected ending whenever the pattern changes only the stem or yo form.
Check the intended meaning
For verbs with a contrast, choose from the relationship expressed rather than from a one-word translation.
Check the idea
Can you explain the decision?
You know where the library is. Should the sentence use saber or conocer?
Reveal the answer
The sentence expresses known information, not familiarity with the library as a place.
Learn it in context