His newfound ability to concentrate is largely thanks to a drug called methylphenidate,他现在能够集中注意力多亏了这种叫哌醋甲酯的药

thanks to由于；归功于

Thanks to I had tied then the safety belt.

幸亏我当时系上了安全带。

Thanks to your timely intervention.

多亏你及时调停。

he is able to sit quietly,be able to focus on things like his homework他可以安静地坐着可以集中精力在他的作业上

able to能做 ...

I may be able to help you in some way.

我也许可以从某个方面去帮助你。

He was able to cast off such an uninteresting task.

他终于摆脱了这么一项乏味的工作。

focus on集中在

Our policy is to focus on developing these areas.

我们的政策是着眼于把这些地区发展起来。

The noise made it hard for me to focus on work.

噪音让我无法集中注意力工作。