itself
it为人称代词，意为：它，其反身代词为：itself，意为：它自己，故答案为：itself
英语中的反身代词
1、I--myself
2、we--ourselves
3、you--yourself
4、you--yourselves
5、she--herself
6、he--himself
7、it--itself
8、they--themselves
9、one--oneself
反身代词是由第一人称、第二人称形容词性物主代词或第三人称人称代词宾格形式，词尾加self或selves组成，可以翻译为“本人、本身”或者“自己、亲自”。
it的反身代词形式it的反身代词是itself。根据不同的人称代词可以拓展出它对应的反身代词：
I-me - my - mine - 反身代词myself
we - us - our - ours - 反身代词ourselves
he - him - his - his - 反身代词himself
she - her - her - hers - 反身代词herself
they - them - their - theirs - 反身代词themselves
it的反身代词例句:
The job itself had been simple enough.这工作本身一直就相当容易。
The town itself was full of life and character.这座城镇本身就充满了活力和个性。
The novel itself remains oddly inert.那小说本身异常乏味
