1. Not unnaturally, she was greatly upset by her father's sudden death. 她父亲突然去世她悲痛不已，这也是人之常情。
2. Since we didn't place many orders to you in the first half of this year that makes me feel unnaturally. 想表达一下“由于今年未未能给你们提供足够多的订单，我内心深感不安”。怎么说合适呢?
3. Darling, you've changed too much and I can't even recognize you. Look at your hair. Your black hair is dyed and is unnaturally curly. What other adventures? 亲爱的。你变得太多了。我甚至都认不出你了。看看你的头发。你的黑色染了颜色。烫得很卷。很不自然。你还想冒什么险?
1. in an unnatural way
2. not according to nature; not by natural means
3. not as might be expected