VERB FOCUS: QUERER & TENER

In Spanish there are two important verbs: QUERER (to want) and TENER (to have). These two verbs are irregular because their roots (QUER and TEN) change according to the conjugation. 

There are more verbs with irregular vowels in the root forms: pensar (to think), entender (to understand), sentir (to feel) , preferir (to prefer)

QUERER

With the verb QUERER the vowel E in the root changes to IE:

querer (to want) > quiero (I want)

Yo

Él, ella, usted
Nosotras, nosotros
Vosotras, vosotros
Ellas, ellos, ustedes
quier-o
quier-es
quier-e
quer-emos
quer-éis
quier-en

The first and second person plural forms are regular and the root of QUERER does not change.

TENER

The verb TENER is very similar, but the first person singular is different:

tener (to have) > yo tengo (I have)

Observe the conjugation: 

Yo

Él, ella, usted
Nosotras, nosotros
Vosotras, vosotros
Ellas, ellos, ustedes
ten-go
tien-es
tien-e
ten-emos
ten-éis
tien-en

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