Out of curiosity, why is "tutan lagon" in the accusative? (That is, why does it end in "-n"?)
I thought the accusative was needed to show a motion/transfer towards something, especially when the usage without the accusative has a distinctly different meaning.
What would it mean without the accusative? That is, what would "Ŝi naĝis trans la tuta lago." (without the "-n") mean? Doesn't it mean the same thing? If so, then why use the accusative here at all?
"Ŝi naĝis trans la tuta lago" means that she swam on the other side of the lake.