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TOEFL BNC: 2582 COCA: 3054
helpful
adjective /ˈhelpf(ə)l/
  1. 1
    useful, or providing help 有用的;提供帮助的

    a helpful guide to choosing colleges 一本有用的大学选择指南

    If you're tired, caffeine can be helpful in low doses. 如果累了,小剂量的咖啡因会有帮助的。

    it's helpful to do something :

    It's helpful to have a calculator for this exam. 这次考试有个计算器很有用。

    helpful for/in doing something :

    Exercise is helpful for controlling high blood pressure. 锻炼有助于控制高血压。

    it's helpful for someone to do something :

    It would be helpful for me to meet him personally. 亲自去见他对我会有所帮助。

     Synonyms and related words
    Useful and effective and working correctly: useful, efficient, effective...
  2. 2
    a helpful person helps you by doing something or by giving you useful advice or information (某人)肯帮忙的,有益的

    a traditional hotel with very helpful staff 服务人员非常乐于帮忙的传统旅馆

    You've been most helpful. 你太帮忙了。

     Synonyms and related words
    Helpful and willing to help: helpful, friendly, kind...

derived words

helpfully

adverb
 Synonyms and related words
Helpful and willing to help: helpful, friendly, kind...

helpfulness

noun [U]
 Synonyms and related words
Friendliness, generosity and kindness: kindness, generosity, hospitality...

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