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Interlingua is an international auxiliary language (IAL) published in 1951 by the International Auxiliary Language Association (IALA). It is the most widely used naturalistic auxiliary language. Interlingua was developed to combine a very simple grammar with a vocabulary consisting of words that are common to the widest possible range of languages. Interlingua is unusual for being immediately understandable to populations numbering in the hundreds of millions. Conversely, it can be – and is – used as an introduction to similar natural languages.
Roughly like Spanish or Italian. The stress is on the vowel before the last consonant, except in the future tense where it is on the final -a, and in the conditional tense where it is on the -e- in the final -ea.
|Future perfect||habera audite|
There are 3 verbs in Interlingua that have irregular forms: esser 'to be', haber 'to have', and vader 'to go'.
Irregular forms are marked in red. Collateral forms are marked in gray.
|Present||es; Plural son||ha||va|
|Perfect||ha essite||ha habite||ha vadite|
|Pluperfect||habeva essite||habeva habite||habeva vadite|
|Future perfect||habera essite||habera habite||habera vadite|