HOW 能否引导同位语从句 例：You have no idea how depressed you have made

how可以引导同位语从句,又如：
I have no idea how he is.
后面不加to.我们可以用还原法进行检验,即把同位语从句抽出来变成一个独立的句子,得：
How depressed have you made her?
这是一个感叹句,how意思是“多么”.
再把它变成陈述句,得：
You have made her depressed.
很明显,depressed是一个形容词,在这里作宾补.make是使役动词,her直接作make的宾语,中间是不加to的.