Definition

1. Quantifier (Từ chỉ số lượng):
   • A few, some: Indicates a small, indefinite number of things, often a pair or a couple, but can be used more loosely. It suggests a quantity that is more than one but not many.
   • A couple of: Specifically refers to two items considered together, often (but not always) forming a natural pair.

Usage Examples

• Quantifier:
  • Anh ấy mua một đôi giày mới. (He bought a new pair of shoes.)
  • Cô ấy chỉ nói một đôi lời. (She only said a few words.)
  • Tôi có một đôi ý kiến về kế hoạch này. (I have a couple of opinions about this plan.)

Advanced Usage

• "một đôi khi": This is a fixed adverbial phrase meaning "sometimes" or "occasionally". It is used to describe an action that happens not very often.
  • Một đôi khi, tôi thích đi dạo một mình. (Sometimes, I like to take a walk alone.)
  • Cô ấy một đôi khi đến thăm chúng tôi. (She occasionally visits us.)

Variants and Related Words

• Đôi (noun/classifier): A pair, a couple. This is the core word, with "một" (one) often added for clarity but sometimes omitted in casual speech (e.g., = a pair of shoes).
• Vài (quantifier): A few, several. Similar to "một đôi" but can imply a slightly more indefinite or potentially larger small number.
• Một vài (quantifier): One or a few. A common synonym for "một đôi" in the sense of "a few".

Synonyms

• Vài: A few.
• Một vài: A few, a couple of.
• Một cặp: A pair (often for things that naturally go together, like earrings, eyes).

Related Phrases

• Nói đôi lời: To say a few words. (Note: "đôi lời" is a shortened, poetic form of "một đôi lời").
• Đôi ba: A colloquial phrase meaning "a few", "a couple", or "several". It emphasizes a small, approximate number.
  • Chờ tôi đôi ba phút. (Wait for me a few minutes.)

Notes on Usage

• "Một đôi" vs. "Đôi": When referring to a natural pair (like shoes, chopsticks, socks), "đôi" alone is often sufficient as a classifier. "Một đôi" can be used for emphasis or to explicitly state the quantity is one pair.
• Flexibility: While "đôi" literally means a pair (two), "một đôi" can be used more flexibly to mean a small, indefinite number, not strictly two, especially in phrases like "một đôi lời" (a few words). The phrase "một đôi khi" (sometimes) is a key example of this extended, non-literal use.

1. A few, some
   • Một đôi khi
     Sometimes, occasionally