Speaking Spanish, you will come across 'tener' all the time, meaning 'to have' or 'to possess'. Like many other common verbs, it is irregular.
There are a number of verbs that are derived from 'tener', and they all have the same irregularities. Although 'tener' does not have a cognate in English (a word that it looks like), the verbs that are derived from it correspond to the English verbs that end in '-tain'. Here is a list of the common ones:
Mantener - to maintain
Retener - to retain
Sostener - to sustain
Obtener - to obtain
Abstener - to abstain
Entretener - to entertain
Contener - to contain
and so on.
Just to illustrate the point about the conjugation, here are a couple of examples:
Hi Matt--this was very informative. I have learned about tener, but had not associated it with these English infinitives.. I am finding your site very helpful.
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