6、.Tothegreatdisappointmentofhisparents,Tomperformedpoorlyinhisstudy.Facingthedisappointinggrades,theycouldn'thelpthinkingthatTomwasadisappointmentandgothimoutofschool,whichmadehimverydisappointed.(disappoint)[拓展联想]否定前缀dis高频词汇①disappear vi. 消失②disagree/disapprovev.不同意③discouragevt.