虽然汤姆学习很努力,但是他没能通过考试.请问用英语如何解说?

虽然汤姆学习很努力,但是他没能通过考试.请问用英语如何解说?
haha

Although Tom worked very hard, he didn't pass the examnation. 注意的是：虽然汉语里有“但是”这个意思，但英语中although 句型里是不用but的

Although Tom worked very hard ,he
didn’t pass the exam .
或者可以这样说
Tom worked very hard ,but he didn’t pass the exam .
although 与but 不能同时使用，只能用其中的一个。用法同because ,so 相同

Although Tom worked very hard, but he didn't pass the exam_

even though Tom is a hard working boy,while he lost in his exam_