有很多种说法，比如这样一句话，虽然他是个孩子，但是没有他不知道的事情。可以有以下几种说法：

1.Although

he

is

a

child,he

knows

everything.

2.He

knows

everyhting,though

he

is

a

child.（注意ALTHOUGH一般放句首，THOUGH句首句中都可以）

3.倒装：Child

as

he

is,he

knows

everything.

4.While

he

is

a

child,he

knows

everything.（WHILE也有虽然之意）