"是的，他说的对" 的英文表达是 "Yes, he is right."

这是一句英语的常见回答语，用来同意别人的话或观点。

例句：

A: "Do you think we should go to the concert tonight?"
B: "Yes, he is right. I heard it's going to be a great show."

A: "I heard that the new restaurant on Main Street has really good food."
B: "Yes, he is right. I went there last week and the food was depcious."

中文翻译：

A: "你觉得我们今晚应该去看音乐会吗？"
B: "是的，他说的对。我听说那场演出很棒。"

A: "我听说主街上的新餐厅的食物很好吃。"
B: "是的，他说的对。我上周去了那里，食物很美味。"