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-.
â¢ A topic sentence is the first sentence of a paragraph that signals to the reader what the para-graphâs main idea will be. â¢ Topic sentences should: Â» relate back to the argument of the thesis;Â» concisely summarize the key idea of the paragraph;Â» can even contain key words from the thesis statement.