上海高考英语的Summary写作通常遵循以下步骤和技巧：

信息提取

略读全文，理解文章主旨。

关注每段是否有中心句，并理清“谁（who）+干了什么（what）+为什么（why）”的基本框架。

略过具体例子，如“for example”或“such as”，因为概要中强调的是论点而非论据。

重点关注转折词后的内容，如“yet”､“however”､“but”､“unfortunately”､“instead”等，转折后往往隐藏着文章的核心信息。

宾语从句或以名词短语作宾语的内容通常也是文章的重要信息。

语言整合

简要概括，缩短关键语句，连接语句。

使用恰当的连接词，如“and”、“but”、“however”等，使概要内容连贯。

巧妙浓缩

最终成文，换词清晰准确，字数适宜。

确保概要内容准确反映了文章的主要观点和结构，同时保持简洁明了。

示例分析

以上海英语高二课本中的一篇文章《The Problem of Packaging》为例，文章主要讨论了包装材料的污染问题及其解决方案。在写概要时，可以按照以下步骤进行：

信息提取

第一段：A large source of rubbish is packaging material. It often makes up more than 30 percent of the total. To understand why this is a problem, consider the following points.

第二段：Garbage into landfills causes pollution； packaging material production process produces air and water pollution.

第三段：Governments, manufacturers, and individuals take measures to deal with the pollution problem caused by packaging materials.

第四段：Although the German method has had some effect, the pollution problem of packaging materials is still a big issue, and we cannot drop our guard。

语言整合

Packaging material is a major source of rubbish, accounting for over 30% of total waste. This leads to pollution problems, including landfill pollution and air/water pollution during production.

To address this issue, governments, manufacturers, and individuals are taking various measures。

巧妙浓缩

Packaging material is a significant source of waste, causing pollution through landfills and production. Solutions involve efforts from governments, manufacturers, and individuals, but the problem persists。

建议

在写Summary时，务必保持客观，避免加入个人主观意见或评价。

注意文章的结构和逻辑关系，确保概要内容条理清晰。

多读多练，提高阅读和写作能力，以便更准确地提取信息和概括内容。