Constructing a coherent paragraph involves several key points. Firstly, it should have a clear topic sentence that introduces the main idea or argument of the paragraph. The following sentences should provide supporting details, evidence, or examples that elaborate on and strengthen the topic sentence. It's important to maintain unity by ensuring all sentences in the paragraph are relevant to the main idea. Additionally, paragraphs should exhibit coherence, meaning each sentence logically follows the previous one, creating a smooth flow of ideas. Effective transitions between sentences and ideas enhance coherence. Moreover, using specific and concrete details helps to make the paragraph vivid and engaging for the reader. Finally, a well-constructed paragraph concludes with a summarizing or transitioning sentence that prepares the reader for the next paragraph, ensuring a logical and cohesive structure in the overall piece of writing.