that的这一用法与as的用法比较相似，可用于表示让步和表示原因的倒装句中，此时的一个重要语法特征是：置于句首的名词不带冠词（即使是单数可数名词也是如此）。下面是相关用法的例句：

1. 表示让步

Boy that (=as) he was, he was chosen king. 他虽是孩子，却被选为国王。

Child that (=as) he is, he knows to help other. 他虽然是个孩子，但知道帮助别人。

Hero that (=as) he was, he shuddered at the sight. 他虽是英雄，但见到这样的情景也不寒而栗。

Big puzzle that (=as) it was, it hadn’t got the better of Jim. 虽然是个大难题，但仍没有难倒吉姆。

以上各句可用although, though来改写成让步状语从句（但不用as, that）。如：

Though he was a boy, he was chosen king. 他虽是孩子，却被选为国王。

Though he is a child, he knows to help other. 他虽然是个孩子，但知道帮助别人。

Though he was a hero, he shuddered at the sight. 他虽是英雄，但见到这样的情景也不寒而栗。

Though it was a big puzzle, it hadn’t got the better of Jim. 虽然是个大难题，但仍没有难倒吉姆。

2. 表示原因

Coward that (=as) he was, he ran away as soon as the enemy attacked. 他是个胆小鬼，敌人一进攻他就跑掉了。

Clumsy idiot that (=as) he was, Michael completely ruined the dinner. 迈克尔是个笨手笨脚的大傻瓜，他把晚餐搞得一塌糊涂。

以上各句可用as, because来改写成原因状语从句（但不用that）。如：

As he was a coward, he ran away as soon as the enemy attacked. 他是个胆小鬼，敌人一进攻他就跑掉了。

As he was a clumsy idiot, Michael completely ruined the dinner. 迈克尔是个笨手笨脚的大傻瓜，他把晚餐搞得一塌糊涂。