2. 动词不定式的被动语态在句子中的作用 1) 做主语（常用it做形式主语） To be offered sympathy by a robot is ridiculous. 2) 做表语 The party is to be held next Saturday evening. 明年, 这种新药将在500个过度肥胖的人上进行试验。

It is ridiculous to be offered sympathy by ….