although /as/while
表尽管的时候的区别，请举例说明

1,通常情况下，although和while引导让步状语从句，可以通用。只是前者多用于句首，而后者多用于句中，可以与though替换。
2，as引导让步状语从句时，要注意的是倒装。而且，倒装的特点是，只把句子的最后成分提到句首，放在as的前面。如果被提前倒装的是一个单数可数名词，记住不要加冠词。
请看例句：
1，Although he is very young, he has known a lot about the modern sociaty.
or He has known a lot about the modern sociaty while/though he is very young.
2, Young man as he is, he has known a lot about the modern sociaty.