这几年他的性格变化很大。

Zhè jǐnián tā de xìnggé biànhuà hěn dà.

These last few years his personality has changed a lot.

气候变化的问题好像越来越严重了。

Qìhòu biànhuà de wèntí hǎoxiàng yuèláiyuè yánzhòng le.

The climate change problem is getting more serious.

这几年城市的变化很大。

Zhè jǐ nián chéngshì de biànhuà hěn dà.

The city has changed a lot in the past few years.