Irregular verbs in the present tense:
Many Spanish verbs do not follow the patterns of the regular verbs you have just studied. Instead,
they change the root (or radical) of the verb, the conjugation endings, or both. Because they follow different patterns, they are considered irregular verbs. Since irregular verbs are so commonly used, a good strategy to identify and learn them is to focus on similarities, grouping them into
patterns. Study the following groups of irregular verbs in the present.
◆ Verbs with irregular first-person singular only; all other forms in the present are regular.
caber – to fit > quepo
saber – to know > sé
caer – to fall > caigo
salir – to leave > salgo
dar – to give > doy
traer – to bring > traigo
estar – to be > estoy
valer – to be worth > valgo
hacer – to do > hago
ver – to see > veo
poner – to put > pongo
The compounds of these verbs are also irregular in the “yo” form only; they add the consonant g between the radical and the verb ending. Compounds are easy to spot, because they show a prefix (des-, dis-, com-, con-, etc.) preceding the radical. Here is a list of frequently used compounds of hacer, poner, and traer.
componer – to compose > compongo
proponer – to propose > propongo
deshacer – to undo > deshago
rehacer – to remake > rehago
disponer – to arrange > dispongo
reponer – to replace > repongo
distraer(se) – to distract > distraigo suponer – to suppose > supongo