bangniman朋友您好：

我们知道，如果要用一单数第三人称代词嗲提名词时，要考虑该名词的性，一般情况下，代替阳性名词要用he，单体阴性名词要用she，代替中性名词要用it。我们主要说说在使用中性名词it的时候，也可以使用he或she的情况。

▲国名，如果仅仅是地理单位，代词用it。例如：

China is in East Asia. It is one of the largest countries in the world.

但是，如果是为政治或经济单位时，代词也可用she。例如：

China has a history of over 5000 years. She is proud of her culture.

▲大学、教会等机构，代词可用it，也可用哪个she。例如：

Beijing University has made great changes in the scope of its / her curriculum.

▲对于一般动物和无生命的东西，代词一般用it， 但是若带有说话人的感情色彩，也可用she。例如：

1.The cat is a useful animal because it eats rats.

The cat leaped onto my bed and coiled herself there.

2.The sun is shining in all his splendid beauty.

The sun performs the revolution about its own axis in about 25 days, 9 hours and 56minutes.

3.Is this your sports bike? How much is it?

—Is that your sports bike?

— Yes, she’s lovely, isn’t it?

(以上观点出自章振邦教授的《新编英语语法》)