I'm learning Chinese using Rosetta Stone and i find 99.9% of the stuff that i encounter while learning to be quite logical. In fact this is the first thing in quite a while that doesn't seem to make any sense.
Look at the last two images and their descriptions: Why does the word 了 follow the verb in the third image, but follows the noun in the fourth image? The situation in both images seems to be the same. And while you're at it, can you explain the word order in the first two images as well?