Literally it would be Yo tengo.
However in Spanish, usually the article is left out so a more traditional translation would be just "Tengo"
I have = tengo/he
I have....ed (e.g. I have visited Madrid = he visitado Madrid)
I have (= I possess) (e.g. I have two brothers = tengo dos hermanos)
Translation: tengo
Note: In order to create the perfect tense, haber is used instead of tener.
Servir is the verb for "to serve". If you want to say I or he/she is serving, use servia. 'Servia' (with an accent on the 'i') is in fact the imperfect tense and means 'he/she was serving' OR '....used to serve' The present continuous tense (is serving) can be translated by the simple present in Spanish - 'sierve' - or by the present continuous - 'esta sirviendo' (again with an accent on the 'a')
Estoy bajo
The verb - is - is a present tense be verb so the tense of this sentence is present. Also because there is only one verb you could say it is present simple.
To say "I am learning" in spanish you use the present progressive tense. It would be estoy aprendiendo.
The present tense of "say" is "says" when referring to he, she, or it, and "say" for all other subjects. For example, "He says that he is coming" or "I say we go for a walk."
Did is the simple past tense. The past participle is done. Instead of saying "I am doing this" you would say "I did this". The present perfect tense is "I have done this."
No. You cannot say I have went somewhere. You can say: 1. I went there. (simple form of past tense) or 2. I have gone there. (present perfect tense)
The present tense for "said" is "say."
Tomamos. This must be used in context, since It is the same as the present tense.
No, said is the past tense. Say is the present tense.
I beat your = Yo rompo tuyo (where 'beat' is present tense); Yo rumpí tuyo (where 'beat' is past tense)
The present perfect tense of say is:I/You/We/They have seen.He/She/It has seen.