Understanding 从⋯⋯起 in Chinese Grammar

The phrase 从⋯⋯起 (cóng...qǐ) is a common structure in Chinese that translates to "starting from..." or "from...on." It is used to indicate the beginning of a time period or the initiation of an action. This construction is often followed by a time expression or a specific event that marks the starting point.

For example:

• 从现在起，你要努力学习了。 (Cóng xiànzài qǐ, nǐ yào nǔlì xuéxí le.)
  

• 从今天起，我就用这台新电脑了。 (Cóng jīntiān qǐ, wǒ jiù yòng zhè tái xīn diànnǎo le.)
  "Starting from today, I will use this new computer."

In these sentences, 从 indicates the starting point (现在 - now, 今天 - today), and 起 emphasizes the action or change that will commence from that point onward. This structure is particularly useful for making announcements, setting goals, or indicating changes in routine.