scientists have found that this disease will respond to treatment by drugs.

问题描述:

scientists have found that this disease will respond to treatment by drugs.
that this disease will respond to treatment by drugs.是宾语从句还是做宾补?

respond to 是谓语,treatment 是它的宾语,不是宾语从句,后面的by drugs 是修饰treatment的,介词短语,表示以什么方式来treat(治疗).
宾语可以是一个名词,词组,也可以是一个句子,只有当宾语是一个句子的时候才可以叫宾语从句.