This list of countries by rail transport network size based on International Union of Railways data ranks countries by length of rail lines worked at end of year updated with other reliable sources. These figures also include urban/suburban mass-transport systems; as well as lines which are not used for passenger services. 1 List.
Review with students what a topic sen-. tence is. (The topic sentence is the sentence. containing the main idea of a paragraph-. often, but not always, the first sentence in. the paragraph.) Put a couple of good models. from the daily newspaper on the overhead-.
A topic sentence is a sentence that indicates the main idea or thesis of a paragraph. Not all paragraphs have clear. -cut topic sentences, and topic sentences can actually occur anywhere in the paragraph (as the first sentence, the. last sentence, or somewhere in the middle); however, an easy way to make sure your reader understands the. point of each paragraph is to write the topic sentence near the beginning .