With his son so disappointing,the old man felt unhappy.由于儿子如此令人失望,老人感到很不快为什么要用disappointing,而不是用disappointed.在此句中,disappointing和disappointed都应该是形容词,不是常常用v-ing这类

With his son so disappointing,the old man felt unhappy.由于儿子如此令人失望,老人感到很不快为什么要用disappointing,而不是用disappointed.在此句中,disappointing和disappointed都应该是形容词,不是常常用v-ing这类
With his son so disappointing,the old man felt unhappy.由于儿子如此令人失望,老人感到很不快
为什么要用disappointing,而不是用disappointed.在此句中,disappointing和disappointed都应该是形容词,不是常常用v-ing这类形容词来修饰物,而使用v-ed形容词的时候,常常用人来做主语.比如interesting和interested.

With his son so disappointing,the old man felt unhappy.由于儿子如此令人失望,老人感到很不快为什么要用disappointing,而不是用disappointed.在此句中,disappointing和disappointed都应该是形容词,不是常常用v-ing这类
disappointing是令人失望的,原句中指儿子不争气,令人失望
disappointed是失望的,指某人对某事失望