【正文】
s doing and then he focuses on the topic of the paragraph – the produce displays – which he describes in the rest of the paragraph. The last sentence rounds off the paragraph by reiterating the topic. Summarize the anizational structure of a paragraph : ? The position of a topic sentence may vary according to the anizational structure used. For beginners, there are three basic positions to place the topic sentence: 1) at the beginning of a paragraph, 2) at the end, and 3) in the middle. If there is no topic sentence at the end of the paragraph, there should be a concluding sentence there. It either restates the controlling idea or draws an inference, bringing the paragraph to the ending naturally. A paragraph is not plete if it is not properly ended. Unity ? A wellwritten paragraph has only one point to make, and every sentence in the paragraph develops or supports that idea. It does not include unnecessary details, nor does it turn off in unexpected directions. ? Sample ? Questions: ? 1. Which paragraph do you think is better? Why? ? Paragraph B, because it has achieved unity, while the sentences in Paragraph A are assembled at random and are difficult to follow because they do not provide details to develop the controlling idea of the paragraph. ? 2. What are the supporting details for this paragraph? Why are they appropriate? ? Two approaches are given as supporting details in Paragraph B to develop the controlling idea expressed in the topic sentence. One is about the balance between science and nonscience courses and the other is about a mixture of easy and difficult subjects. The second approach is further developed by adding two more supporting examples. All the four sentences serve to support the topic sentence of the paragraph. Therefore, they are appropriate details and the paragraph has achieved unity. ? Complete the following outline for paragraph B: ? Topic sentence: New students should give careful consideration to the courses they want to take in their first