check students' homework about the map writing.
discuss the key points of writing map.
the most important part is to study the structure of the writing.
| 第一段（引出话题，表达观点） | 1 | Nowadays, an increasing number of people are concerned about_____ | 背景介绍 |
| 2 | However, whether_____is a controversial issue. | 辩论话题 | |
| 3 | My view is that_____ | 写作观点 | |
| 第二段 （说理） | 4 | First, it is obvious that______ | 原因一，中心句 |
| 5 | (This means that)_______ | 具体理由 | |
| 6 | So, _________ | 所以观点成立 | |
| 第三段 （举例） | 7 | Moreover, __________ | 原因二，中心句 |
| 8 | For example, _________ | 举例，越具体越好 | |
| 9 | __________ | 例证解释说明 | |
| 第四段 （让步） | 10 | That is not to say that____not _____ | 并不完全否定反方观点 |
| 11 | Of course, _________ | 承认反方观点的合理性 | |
| 12 | But_________ | 驳斥反方观点不合理性 | |
| 第五段 （结尾） | 13 | In sum, ___________ | 重申观点 |
| 14 | Meanwhile, ___________ | 不能忽视反方观点 | |
| 15 | By doing so we can make sure that___________ | 思想升华 |
