successful的副词形式是successfully。

successful：

adj.达到目的;有成效的;获得成功的;有成就的；

比较级： more successful最高级： most successful

扩展资料

The school has established a successful relationship with the local community.

这所学校与当地社区建立了良好的关系。

The company has had another successful year.

公司又度过了一个兴旺发达之年。

I didn't expect him to become a successful writer.

我没想到他会成为一个成功的作家。

Under the new scheme only successful schools will be given extra funding.

在新体制下，只有办得好的学校才可获得额外经费。