When combined, `一直` (yīzhí) literally means “one straight,” creating a powerful and intuitive image of a single, straight, unbroken line. This visual metaphor perfectly captures both of its meanings: a continuous stretch of time and a straight path.
While “一直” (yīzhí) is primarily a functional grammar word, its common usage reveals a subtle aspect of communication. Chinese often emphasizes the duration and continuity of a state or action. A key cultural and linguistic comparison is with the English word “always.” In English, “always” can describe a habit made of repeated, separate actions (e.g., “I always drink coffee in the morning”). The Chinese equivalent for this is usually `总是` (zǒngshì). “一直” (yīzhí), on the other hand, is used for a single, *unbroken* stretch of action. Saying `我下午一直在看书` (Wǒ xiàwǔ yīzhí zài kànshū) doesn't mean you repeatedly picked up a book, but that you were engaged in the single, continuous activity of reading for the whole afternoon. This distinction highlights a preference for specifying whether an action is habitual (repeated instances) or continuous (one long instance). Understanding this prevents common mistakes and makes your Chinese more precise.
“一直” is extremely common in daily conversation, from casual chats to giving directions. Its usage is generally neutral and fits both formal and informal settings.
This is the most frequent use of `一直`. It's placed before the verb to show that an action has been happening continuously from a certain point in the past up until now, or for a specific, uninterrupted duration.
When giving directions, `一直` means “straight” or “straight ahead.” It's almost always followed by a verb of movement like `走` (zǒu - to walk), `开` (kāi - to drive), or `飞` (fēi - to fly).
The most common point of confusion for learners is the difference between `一直` (yīzhí) and `总是` (zǒngshì). They can both be translated as “always,” but they are not interchangeable. 一直 (yīzhí) → Unbroken Continuity Use `一直` for a single action or state that continues without interruption over a specific timeframe.
总是 (zǒngshì) → Habitual Repetition Use `总是` for an action that happens repeatedly out of habit, or is a general truth. The actions are separate instances.
Simple Test: Ask yourself: Is it one long, unbroken action (→ `一直`), or many separate, repeated actions (→ `总是`)?