Yes, I know and completely understand what you mean. Also, at a young age, a child tends to choose one language first before the other. Usually, as you mentioned, the child chooses the mother tongue first (but not always). We cannot avoid this. However, as mothers, all we can do is guide our kids in the right direction on how to approach a second language. How do we approach it? As I suggested in my post, I think we should try many different ways until we find one that fits our child best. Each child is different, and each child's reaction will be different to every approach. For example, some kids are outgoing and would love to go to America; however, on the other hand, some kids are shy and can't make friends well. Those kids would have a hard time in America and would beg to come back to Korea. Everything is perspective.