结构推理 这位老太太确信，今天她儿子会回家来为她庆祝生日的。(to feel assured)
【正确答案】The old lady feels assured that her son will come back home today to celebrate her birthday.
【答案解析】[翻译指导] 翻译时，注意本句的时态。feel assured “确信”，后可接宾语从句。