中文：

配股是上市公司向原有股东发行新股的一种方式，也是上市公司在股东大会上通过决议，以低于市场价格向股东配售股票的一种方式。那么，什么时候适合使用配股呢？

首先，当公司需要筹集更多的资金，以扩大经营规模或进行其他投资时，可以考虑使用配股方式筹集资金。配股可以避免公司因发行新股而导致的控制权分散和股权稀释等问题，同时也可以为原有股东提供更多的投资机会。

其次，当公司需要调整股权结构，优化公司治理结构时，也可以考虑使用配股方式。通过配股可以引入更多的机构投资者和战略投资者，改善公司治理结构，提高公司的管理水平和治理效果。

此外，当市场行情不好时，公司也可以考虑使用配股方式来稳定股价。通过配股可以增加公司的资本实力，提高公司的信用等级和偿债能力，从而稳定股价，避免因市场波动而导致的风险。

总之，配股是一种重要的股票发行方式，适用于不同的市场环境和公司需求。但是，在使用配股时也需要注意一些问题，如避免信息不对称、控制权被稀释等风险。因此，公司需要综合考虑各种因素后做出决策。

英文：

Issuing additional shares to existing shareholders is a method used by listed companies to raise funds, and it is also a way for companies to pass resolutions at shareholder meetings to sell shares to shareholders at a price lower than the market price. So, when is it appropriate to use the method of additional share issue?

Firstly, when a company needs to raise more funds to expand its business scale or make other investments, it can consider using the method of additional share issue to raise funds. Additional share issue can avoid issues such as the dilution of equity and the loss of control over the company caused by the issuance of new shares, and it can also provide more investment opportunities for existing shareholders.

Secondly, when a company needs to adjust its ownership structure and optimize corporate governance structure, it can also consider using the method of additional share issue. Through additional share issue, more institutional investors and strategic investors can be introduced to improve corporate governance structure and enhance management level and governance effect.

In addition, when the market is not good, companies can also consider using additional share issue to stabilize the stock price. Additional share issue can increase the company's capital strength, improve the company's credit rating and solvency, thus stabilizing the stock price and avoiding risks caused by market fluctuations.

In general, additional share issue is an important method of share issuance, which is suitable for different market environments and company needs. However, when using additional share issue, some problems should be noted, such as avoiding information asymmetry and dilution of control rights. Therefore, companies need to make decisions after comprehensive consideration of various factors.