begin的现在分词是beginning，意思是开始、着手、创始、创办、起初是等。
用法示例：
1.Dawn is beginning to show in the east.
东方露出了曙光。
2.The weather is beginning to improve
天气开始好转了。
3.Frankly, Thomas, this question of your loan is beginning to worry me
老实讲，托马斯，你贷款的问题开始让我担心了。
4.The debate seems, in retrospect, to have been fixed from the beginning.
回想起来，这场辩论好像从一开始就被人操纵了。
5.We are beginning to have some insight into drug therapy.
我们开始对药物治疗有了一些深入了解。
