help的形容词怎么写??

An A to Z of careers gives helpful information about courses.

一本按字母顺序排列的'职业手册，提供了有助于课程选择的信息。

Having the right equipment at hand will be enormously helpful.

有合适的工具在手边将会极为有用。

The booklet should be very helpful to parents of disabled children.

这本小册子对于残疾儿童的父母会很有用。

Contact with other disabled yachtsmen of like mind would be helpful.

联系一下其他具有同样想法的残疾帆船赛手是会有帮助的。

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。