不定式作表语
不定式可放在be动词后面，形成表语。例如：
My work is to clean the room every day.
His dream is to be a doctor.
（实习编辑：杨冰玉）
From:https://www.zgghmh.com/CET-4/20000828.asp
不定式作表语
不定式可放在be动词后面，形成表语。例如：
My work is to clean the room every day.
His dream is to be a doctor.
（实习编辑：杨冰玉）