To be loved is the happiest thing in the world .这句中的thing in the world 是做主补吗?

To be loved is the happiest thing in the world .这句中的thing in the world 是做主补吗?
To be loved is the happiest thing in the world .这句中的thing in the world 是做主补吗?

To be loved is the happiest thing in the world .这句中的thing in the world 是做主补吗?
被爱是世上最幸福的事.
thing in the world 不是做主补.
the happiest thing in the world 作表语

是宾语