under construction
The construction A—+量词，B—+量词 is a common grammatical structure in Chinese that is used to describe two different entities or actions in a parallel manner, often highlighting their simultaneous occurrence or contrasting characteristics.
In this structure, "A" and "B" represent different subjects or actions, while "量词" (measure words) are used to quantify nouns. The measure words are essential in Chinese as they provide context and clarity regarding the quantity and type of the nouns being discussed.
他摔得很严重，身上青一块，紫一块。
(He fell seriously, with bruises of different colors on his body.)
Here, "青一块，紫一块" uses the measure word "块" to describe the bruises, indicating that there are multiple bruises of different colors.
大家你一句，我一句，搞得他反而没了主意。
(Everyone spoke one sentence each, which made him lose his idea.)
In this case, "你一句，我一句" illustrates the back-and-forth dialogue among the people, emphasizing the alternating contributions.
他俩说着话，突然你一下儿、我一下儿地打起来了。
(While they were talking, suddenly you hit me once, and I hit you once.)
The phrase "你一下儿、我一下儿" indicates the alternating actions of hitting, using the measure word "一下儿" to denote each instance of the action.
This structure is particularly useful for creating vivid imagery and emphasizing the dynamic nature of interactions or descriptions in Chinese. By mastering the A—+量词，B—+量词 construction, learners can enhance their fluency and expressiveness in the language.