try playing classical music to them before they start learning and pick up languages... they are more sensitive then....or as early as when you yourselves get pregnant. The most important thing is actually during the pregnancy period...the positive and kind thoughts developed then are very influential to the unborn.
seem like babies who grow up with music are happy and secured babies...and with those positive emotions, they can learn things very fast..we dun have to worry for them whatever languages really.
it is very true that from 1-3 years, it is the feeding year, just feed them with as much as their brain can take in and most important LOVE really.....a kid who feel loved will have OPEN MIND to accept lots more things....
good lucks to all "child raisers"~~~