What word do you find the most useful in spanish in creating a sentence?
Mine is voy a (I am going to).
13 Answers
despacio...as in
Por favor, hable más despacio.
Mine is that old favourite "vale". It covers a multitude of sins.
I use Creo A L L the time, but again, I am in a Spanish literary criticism class 
Mine is "ayuda" often! 
Hmmm... Well since my vocabulary for spanish is very limited... I would say...
Cómo as in ¿Cómo estás?
Pues... I had thought that my Spanish had been more... Spanish until some time ago I happened to register at the local Cervantes library where there was a Spaniard behind the desk in the office. While trying to utter some Spanish oraciones I realised that the most useful Spanish word for me was... okay. I was laughing at myself aloud there... Maybe I shoulda cried but it wouldn't have changed anything, unfortunately. 
Puedo - Necesito etc. Then I don't have to conjugate the next verb.
Pues..........
it let's me think what can I say further. After two months, in Spanish I still think quite slowly. 
For me is - vamos!
Escpecially in construction - "vamos a"...
Mine is tengo.
foysoy, this is a surprising post, as voya does not exist.
Mine is also 'cómo', because I use it in greetings, asking how to do something, and also asking someone to repeat something they've said.
I have a habit of starting a sentence that is a request as Perdone, pero es posible que.....................
