In this course, we map English progressive/continuous aspect with "-ing" to Klingon -taH and vice versa, so "Torg is walking" would be yIttaH torgh. (Which would also mean "Torg was walking" or "Torg will be walking".)
The exact usages may not be the same but this approximation will do for a beginning.
When addressing someone in this way, the name can come either before or after the rest of the sentence. So the question was sort of on the right track. yIt torgh Torg walks could also be interpreted as she walks, Torg. A comma between the words would make it obvious that the second meaning is intended. The other two sentences have prefixes that make only one interpretation correct, regardless of whether the name is first or last.