首先，需要明確文章的主題和要點，然后在第一段進行總體概括和趨勢描述。可以通過以下幾個步驟：

1. 閱讀題目和相關(guān)材料，理解文章的主題和要點。

2. 總結(jié)文章的主要內(nèi)容，包括問題、原因、影響等。

3. 描述當前的趨勢和發(fā)展方向，可以使用一些形容詞或副詞來表示，如“逐漸增加”、“不斷擴大”、“日益嚴重”等。

4. 引出下文的論述，為接下來的段落做鋪墊。

例如，如果文章的主題是“環(huán)境污染”，第一段可以這樣寫：

Environmental pollution has become a major concern in recent years. With the rapid development of industry and urbanization, the problem of pollution has become increasingly serious. The trend of pollution is showing no signs of slowing down, as more and more people are joining the urban population and the demand for energy and resources continues to grow. In this essay, I will discuss the causes and effects of environmental pollution and propose some solutions to address this issue.