VOA慢速英语:Playground Builder Reaches Overseas With Online Tools

work on致力于…

例句：He has been working on a new novel for over a year now.
      近一年多来, 他一直在写一部新小说。

2.Taylor Swift is a singer, songwriter and musician who hardly needs an introduction these days.

barely，hardly，rarely 和 scarcely四个词意义相近，都表否定概念，但也有一些差别。

　　rarely 意为“难得，不常”(not often)。

　　Rarely have I seen him smile.

　　hardly 往往强调能力上有困难，意为“简直不，很难”。

　　He can hardly jump over the fence.

　　scarcely 往往强调不足，常同 enough，sufficient，any 等表示程度的词连用，意为“不太，几乎，简直没有”。

　　He has scarcely any money left.

　　barely 与 hardly 和 scarcely 意思相近，意为“几乎，勉强，仅能做到”。但如果后面跟有 ever，any，at all 等词，只能用 hardly 或 scarcely，不能用 barely。