形容詞 helpful:

1. providing assistance or serving a useful function
2. of service or assistance
3. showing a willingness to cooperate

1. You ale very helpful.
   您真幫了我的大忙。
2. The experience in army is helpful to him.
   他從軍的經(jīng)歷對(duì)他很有用。
3. Maybe these nutrients are helpful to your health.
   或許這些營(yíng)養(yǎng)品對(duì)你的健康有幫助。
4. These tactics are unlikely to be helpful to you.
   這種方法對(duì)你未必有用。
5. Lionel asked me how things were going at work, but I suspect he was just fishing for information that might be helpful to his own company.
   萊昂內(nèi)爾問(wèn)我工作情況如何，不過(guò)我懷疑他只是想探聽(tīng)一些可能對(duì)他自己公司有幫助的消息。
6. Knowing where a tool tip is at any time in a program can be very helpful.
   隨時(shí)知道刀尖在程序中的位置是非常有益的。
7. I hired a car the day after landing and bought a comprehensive book of maps, which my found most helpful on the cross country.
   著陸后的當(dāng)天，我租了一輛汽車(chē)并買(mǎi)了一本內(nèi)容詳細(xì)的地圖冊(cè)。我覺(jué)得在穿越村的旅途中，這本地圖是很有幫助的。
8. It's often helpful during an illness to talk to other sufferers.
   病中與同病者談天常是有益的。

help.ful

adj.（形容詞）
Providing assistance; useful.
給予幫助的；有用的

【引伸】
help.fully
adv.（副詞）
help.fulness
n.（名詞）