One of the hardest things to do when you learn Spanish is how the verbs actually are used, and work. We will try to clear that up here.
Spanish and many other languages, excepting English, has one of the hardest verb systems to learn. Spanish (and these other languages) uses a synthetic verb system. In other words, the verbs in these languages can have a lot of forms. When one learns to read or speak Spanish the things you need to learn in the verb area are: (a)learn the common irregular forms, and the idioms they may carry with them, (b) learn a few rules that will help you determine the person or tense, and to look up other verb forms, if you need to.
So, which of the verbs and forms are the most commonall I have compiled a short list of the most common verbs used in the newspapers, magazines, advertisement, and online dictionarys, but do keep in mind, this list is short, in the interest of brevity, and is by no means complete. following the word, There is a short explanation of the verb/form.
(A) ha: combined with “-ido” or “-ado” at the end of another verb means he/she/it has. This is a past participle.
(B) han: the plural equivalent of “ha” only adds extra.
(C) fue and dijo: are “was” and “said”, the past tense of ser “to be”, and decir “to say”(D) habia: imperfect tense used for “there was” or were.
(E) hizo: past form of “hacer” equivalent of “he/she/it did” or “made”.
(F) podria: “could”,or “may be able”, conditional form of poder, “to be able”.
(G) sido: literally “been”, often used with ha or han, “he/she/it has been”.
(H) fuera: past subjunctive, means “was” or “were”.
Understand that this is only a small portion of the verb forms and tenses. I highly recommend a good translation dictionary on your bookshelf. Inside you will find more in depth information on verbs and tenses along with many of the other rules for reading and speaking Spanish. There is very good online information and free resources that can explain these things in more detail than I have room (and time) for.