Although后面 不一定要跟句子。虽然Although和Though都表示"虽然"的意思，常用来连接两个句子，但它们在用法上略有不同。
Although后面通常跟一个从句，如：
Although it was cold outside, she refused to wear a coat.
Though后面通常接一个完整的独立子句，如：
Though it was raining, he still went out for a walk.
在某些情况下，Although引导的从句可以放在句中，而不一定放在句首或句末。例如：
Although Tom was ill, he went on studying.
Although the sun was shining, it wasn't very warm.
综上所述，Although后面可以跟句子，也可以放在句中，具体使用哪种形式取决于句子的结构和所要表达的意思。