是代词，在用作人称代词时指代前文提过的某事。

"It" is a pronoun. As a personal pronoun it refers back to something that has already been mentioned.

youdao

是代词，在用作人称代词时指代前文提过的某事。

"It" is a pronoun. As a personal pronoun it refers back to something that has already been mentioned.

youdao