The software he mentions (rosettastone.com) doesn't work with grammar either if I remember correctly. Instead, for one spoken sentence, they display various ima

The software he mentions (rosettastone.com) doesn't work with grammar either if I remember correctly. Instead, for one spoken sentence, they display various images of which you have to pick the right one (i.e. the image the sentence corresponds to). It's the child approach: When you were a kid, you probably didn't have any clue about english grammar either, yet you were able to produce perfectly valid english sentences.