The verb Tener means "to have" and it refers to possession. If I want to say "I have to go", I don't think tener is the proper verb to use (but, if it is please let me know)*YES IT IS. For this sentence, am I able to use haber (yo he ir) *YES, YOU MAY USE "YO HE DE IR" BUT AT LEAST IN CHILE, IT'S EXTREMELY UNUSUAL/FORMAL or should I use necesitar (yo necesito ir)? *THAT'S ANOTHER POSSIBILITY BUT THE MEANING THERE IS "I NEED TO GO" (NECESSITY)* Is it okay for me to use both haber and necesitar? *YES BUT THE 1ST ONE IS NOT COLLOQUIAL-AT LEAST HERE- Can haber be used in a sentence without another verb? *YES, AS IN THERE IS/ARE; "HAY MUCHOS NIÑOS EN CLASE HOY", "HAY UN LIBRO EN LA MESA"
If someone asks me, "Have you ever...?" and I want to answer with "Yes, I have." can I say, "Si, yo he."? *NO, WE DON'T USE 'AUXILIARY VERB' FORMS IN SHORT ANSWERS, SO OUR SHORT ANSWERS ARE: "SI/NO" OR FULL: "SI, ESTUVE BLA BLA BLA"
NOTE: My thought process is that I should not use the verb tener in the example sentence above because it doesn't speak about possessing or owning anything. *THIS APPLIES EXACTLY AS IN ENGLISH "I HAVE A CAR"="TENGO UN AUTO" OR "I HAVE TO GO"="ME TENGO QUE IR" --------> SAME VERB.