1.

1. He later regretted his impulsive decision.
    后来他懊悔凭冲动作出的决定。

2. She is an impulsive person; we never know what she will do next.
    她是个容易冲动的人；我们从来不知道她下一步想做什么。

1. 冲动：'等我答应了才自己去拿. 去买东西也是这样,居然像别的孩子一样自己拉着购物车的侧面和我一起走. 感觉没有以前那么'冲动'(impulsive)了. 我提醒他不要随便和陌生人说话,他说'我没有和陌生人说话呀. '我说我只是提醒你.

2. impulsive

2. 冲击的：foregoing 前述的 | impulsive 冲击的 | shock 冲击

3. impulsive什么意思

3. 易冲动的：impulse 刺激,推动力 | impulsive 易冲动的 | propel 推动,驱策

1. 易冲动的;草率的
    If you describe someone as impulsive, you mean that they do things suddenly without thinking about them carefully first.

    e.g. He is too impulsive to be a responsible prime minister...
           他容易冲动，很难成为值得依赖的首相。
    e.g. Avoid making an impulsive decision.
           避免作出草率冲动的决定。

1. characterized by undue haste and lack of thought or deliberation
    (`brainish'' is archaic)

    e.g. a hotheaded decision
           liable to such impulsive acts as hugging strangers
           an impetuous display of spending and gambling
           madcap escapades

    Synonym: hotheadedimpetuousmadcaptearaway(a)brainish

2. determined by chance or impulse or whim rather than by necessity or reason

    e.g. a capricious refusal
           authoritarian rulers are frequently capricious
           the victim of whimsical persecutions

    Synonym: capriciouswhimsical

3. having the power of driving or impelling

    e.g. a driving personal ambition
           the driving force was his innate enthusiasm
           an impulsive force

    Synonym: driving

4. without forethought

    e.g. letting him borrow her car was an impulsive act that she immediately regretted

5. proceeding from natural feeling or impulse without external stimulus

    e.g. an impulsive gesture of affection

    Synonym: unprompted