The reason they do un not uno is because uno means 1. Un is a/ an so feminine is una. An easy way to remember whats masculine and whats feminine is that the endings for men can spell L-O-N-E-R-S and girls are every thing else. And please also know I dont mean to insult any one or be gender rasist thats just the way i was taught and how i remember. Hope this helps someone.
Well, I certainly hope my explanation was of some aide to you in your understanding. It also works for all verbs. Comer, bailar, estudiar, eprender, etc. They are all used in exactly the same way as I have explained for tiener. Keep a notebook with a list of the verbs you learn. Then break each down into who they work with, like I did with tiener. It might help.
Oh, and we can't forget:
Nosotros tienamos - We have. But then again, we haven't gotten that far into verb conjugation just yet.
A few points MsPuddles:
It's "tener" not "tiener". And the nosotros conjugation is "tenemos" not "tienamos. Also there is no verb "eprender". Perhaps you mean "emprender" or maybe "entender".
It's probably worth noting that "comer, bailar, estudiar, emprender" are not conjugated exactly the same way as "tener". Certainly, all verbs are conjugated to the subject, but the verbs you have listed are regular verbs and follow regular conjugation patterns. "Tener" is an irregular verb and its variations need to be learnt.
Verbs need to be conjugated to match the subject. We do the same in English, but to a much lesser extent:
Él tiene - He has
Yo tengo - I have
In future check the discussion before asking, as your question has already been asked and answered.
You will find links to both the conjugation rules and the conjugation table for "tener" in one of my other posts.
I pronounced it a little incorrectly but still got it right! Earlier I had to pronounce uno dos tres and said it perfectly and was rejected 3 times, then again another 3 times! It would not let me connect to the comments on both occasions! Why doesn't this app allow you to discuss with others apart from only in the comments? I have many questions about how this app works