In Present simple^x, Nouns^x, Auxiliaries^x

Hello meg2589 and all, I almost exclusively teach Spanish students, with the exception of some American students who are learning Spanish but this is a different story. I can tell you the most common mistakes and difficulties that we, Spanish people, find when studying English. The first problem...

Of course I don't mind your asking I don't know what your first language is, but in my country, Spanish speakers find it difficult too to understand that the "s" is necessary to form the simple present of a verb for the 3rd. person singular. The reason is that we associate the addition of an "s"...