Reduplication of measure words (量词重叠)
In Chinese, many single-syllable measure words (量词) can be reduplicated (doubled) to emphasize that every single member within a given scope possesses a certain characteristic. It is equivalent in meaning to 每 (měi — “every / each”). The reduplicated measure word is usually followed by the adverb 都 (dōu). In English, it translates to “every single...”, “each and every...”, or “day after day / year after year”.
Grammar Rules
1. Expressing “Every Single”: Doubling a measure word (e.g., 张张, 个个, 天天) highlights that an attribute applies to all items or time units in a group without exception (identical to the 每……都…… pattern).
2. Paired with “都”: The adverb 都 (dōu — “all / every”) is usually placed after the reduplicated measure word in the predicate.
3. Scope of Usage: Only common, single-syllable measure words and time units can be reduplicated (e.g., 个个, 张张, 件件, 本本, 天天, 年年).