If you have local friends ask them to speak to young children in the local language, especially if you expect to be in the country for a few years. Continuous exposure to the language will help the child learn it and make their stay in the country much less frustrating and much more enjoyable. The effects of culture shock usually fade over time, especially with family support and encouragement to understand the differences met during time spent in a foreign country. The time scale of this pattern varies for everyone and not everyone experiences all three. The most common time scale seems to be approximately a week of Euphoria, a couple of months of Depression and many months of Adaptation.
Many expats feel that the first year in a country is one of ongoing adaptation and orientation.
However, culture shock can be cyclical and expatriates find that it recurs over time, especially at certain times of year, no matter how long they stay in a country. Special holidays or anniversaries can reawaken aspects of culture shock and spark depression and frustration years after the move. Children can experience this cycle too and they need ongoing support from their parents to benefit fully from the experience of living abroad.