有同学问become后面接比较级吗？【答】become后面可以接形容词，所以肯定可以接形容词比较级。比如：
The weather becomes warmer.
天气变得更加暖和。
It became more difficult for him.
对于他而言，事情变得更加困难。
She becomes stronger than before.
她变得比以前更加强大。

更多详细用法，见：become后面接什么词性