sitting /(be)seated in sofa ,my dad was watching

sitting /(be)seated in sofa ,my dad was watching
sitting /(be)seated in sofa ,my dad was watching TV.
Dressed in black,the boy looks very hard some .
Faced with the crisis ,the newly-elected president will suffer a hard time.
开头第一词都是要问的,为什么这里都是主动要用被动形式?
谢谢拉'望老师多补充几个类似的使役 非谓语动词做定语用被动的…