研究生英语写作篇 Chapter One Paragragh Writing.ppt

The second part of unity is that every supporting sentence must directly explain or prove the main idea that is stated in the topic sentence. Do not include any information that does not directly support the topic sentence. Sometimes students write supporting sentences that are “off the topic”. These are called irrelevant sentences. IV. Unity Study the three paragraphs that follow. All of them discuss the same topic. In your opinion, which paragraph has unity and which two do not? Which paragraph discusses more than one topic? Which paragraph has irrelevant sentences? ? The HIV/AIDS epidemic is still growing explosively in most parts of the world. In Central and Eastern Europe, HIV is spreading rapidly in countries that had almost no cases a few years ago. In China, there were an estimated 10,000 HIV-infected persons at the end of 1993, and this total grew ten-fold, to 100,000, by the end of 1995. In the countries of sub-Saharan Africa, the HIV/AIDS epidemic rages on. In Kenya, Malawi, Rwanda, Tanzania, Uganda, Zambia, and Zimbabwe, 10 percent of the women visiting postnatal clinics in urban areas are infected with HIV, and IV. Unity in some areas, the rate is 40 percent. Mothers can give the HIV virus to their children during pregnancy and childbirth or when breast-feeding. The virus is also transmitted through blood and blood products. For example, drug users who share needles may become infected. The main method of transmission is, of course, unprotected sex, which accounts for 75 to 85 percent of infections. IV. Unity The HIV/AIDS epidemic is still growing explosively in most parts of the world. In Central and Eastern Europe, HIV is spreading rapidly in countries that had almost no cases a few years ago. In China, there were an estimated 10,000 HIV-infected persons at the end of 1993, and this total grew ten-fold, to 100,000, by the end of 1995. In the countries of sub-Saharan Africa, the HIV/AIDS epidemic rages on. In Kenya, Malawi, Rwanda, T