Summary: Use the sequence of name, command, praise, command when teaching a dog to sit. Learn how to teach a dog to sit by addressing the dog by name in this free pet training video.
"Name command praise command. For the majority of commands that you administer to your dog, I would like you to address them by the name of the dog, name of the command, followed by praise and command name. The reason, Koogle, the reason that I like this type of a sequence, if I address a singular dog, such as my dog Koogle, I want him to know I'm particularly talking to him. If I'm addressing a pack of dogs, I will more, more times than not address the pack as dogs. If it's just you and your dog, it's important to let your dog know, Koogle, that I'm talking directly to that dog. For example, I will say Koogle sit. Good sit. Name, command, praise command. This sequence you can use for the majority of commands with your dog."
eHow Article: Addressing a Dog to Give Commands