While performing Qirat on long ayaah of the Holy Qur'an, it is obvious to lose breath when in between the ayah. When losing breath, the recitation is paused and then continued from two or three words behind where it was stopped, after inhaling again. The Qari's (Performers of Qirat) don't seem to follow a single ruling on this. They sometimes go one word back, sometimes two, sometimes none.
It seems to me that the Qari goes back to a word from where if read, there would be a meaningful statement and the statement would not contradict the meaning of the Ayah as a whole.
Is my assumption true?
If true, how does a Qari who can just read but not understand Arabic go back to the correct word?
If false, what is the general ruling to continue a discontinued ayah while reciting The Holy Qur'an?