atoms and molecules always were much more likely to emit light spontaneously.能不能帮我分析一下

atoms and molecules并列名词作复合主语 always 状语were much（程度修饰的状语） more比较结构的状语 likely to emit light spontaneously状语.
were likely to emit复合结构作状语 light作宾语那谓语呢？我不懂得地方是were likely to emit light的谓语和宾语是怎么划分的？尤其的这里的谓语是有什么成分做的？were likely to emit前面的就是谓语呀，这种叫复合谓语，核心词是动词emit，而 light就是emit的宾语