so it was easier for the detective to watch her

问题描述:

so it was easier for the detective to watch her
这里的to watch her是动词不定式做the detective后置定语吗?

不是的.这是一个句型:it be+形容词或副词的比较级或*+for sb to do sth
在这里it was 就是it be,easier就是形容词的比较级,for the detective 就是for sb ,to watch her就是to do sth