helpful adj. 有帮助的；有益的；

例句：

The dietitian was helpful, making suggestions as to how I could improve my diet.

这位饮食学家很有帮助，就我如何能改善膳食提出了建议。

扩展资料

You deserve a reward for being so helpful.

你帮了这么大的忙，理应受到奖励。

The staff couldn't have been more helpful.

职员们十分愿意帮忙。

You'll find it helpful to talk things over with a friend.

把情况和朋友详细聊一聊，你会觉得大有帮助。