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Present Tenses

一般现在时和现在进行时的用法与区别。

一般现在时用于习惯、事实和一般真理:

  • Water *boils* at 100°C.
  • She *works* in marketing.
  • 现在进行时(be + -ing)用于正在进行的动作:

  • They *are developing* a new product.
  • 区别要点:

  • 状态动词通常不用进行时:know, believe, understand, prefer
  • Examples

    TOEFL Tip:

    Look for time signal words to determine the correct tense.