it/ɪt/
pron.1. (指事物)它This is my watch, it's a Swiss one.这是我的手表,它是瑞士制的。
Where's my book? -- Have you seen it?我的书在哪里?你看见了没有?
2. (当性别不明或被认为不重要时,指动物和人)它Where is the dog? It is in the other room.狗在哪里?它在另一间房里。
3. (用作各种无人称动词形式的主语) It is raining. 正在下雨。It is cold.天气寒冷。