这些句子你都会了，阅读理解还会难吗？

分析：so that引导的是结果状语从句；as if引导的是表语从句。

句意：一名男演员和一名女演员站在场景前，好让他们看起来像是站在一个小岛的水边。

20.（2011全国新课标阅读理解C篇） They are among the growing number of Americans who, driven by higher living costs and a falling economy（经济）, have taken up vegetable gardening for the first time.

分析：句子主干是They are among the growing number of Americans。“driven by higher…”是过去分词短语作定语，修饰Americans；“who,…have taken up vegetablegardening for the first time”是定语从句，修饰Americans。

句意：越来越多的美国人迫于生活成本的上升和经济的衰退，首次开始经营蔬菜园子，他们就在其中。

21.（2011全国新课标阅读理解D篇） When you join the them in our Revenue Administration Unit, you will be providing assistance within all parts of the Revenue Division, dealing with post and other general duties.

分析：when引导的是时间状语从句；“dealing with…”是现在分词短语作伴随状语。

句意：当你加入我们财务管理单位的这个团队，你将协助财务部各部门的工作，处理邮件和其他日常事务。

22.（2010大纲卷Ⅱ阅读理解A篇） One thing that most touched my heart was that she would go to whoever was sick and just be with them.

分析：本句中that引导定语从句，修饰先行词the thing， that she would go to whoever was sick and just be with them.中that引导表语从句，to 后又接一个宾语从句，表示无论是谁生病，and并列would go 和 be with。

句意：最感动我的一件事情是无论谁生病了，狗狗都在其身边陪伴着他。

23.（2010大纲卷Ⅱ阅读理解C篇） Mr. Wei, a manager of a newly-opened ski resort in Beijing, sees the growth of an industry that could soon lead Chinese to head for the ski resorts of Europe, In recent years ski resorts offering natural snow have opened in China.

分析： a manager of a newly-opened ski resort in Beijing作为Mr. Wei 的同位语，that could soon lead Chinese to head for the ski resorts of Europe引导一个定语从句修饰industry。最后部分用了offering分词做后置定语对resort的修饰。

句意：北京第一家滑雪旅游开发商经理魏先生，看到了中国旅游市场迅猛发展，很快便借鉴了欧洲滑雪的经验，最近几年滑雪旅游在中国流行起来。

24.（2010大纲卷Ⅱ阅读理解C篇） The ski resort where Mr. Wei works cost nearly $4m to set up and as so often in China when someone comes up with a good idea,many others hash in and price wars break out.

分析：where引导了一个小的定语从句，when引导了一个状语从句，由此构成了这个句子。

句意：魏先生工作的滑雪场将近花费了4百万，并且在中国，当其他人想出了一个主意，其他人就会爆发一场声势浩大的价格战。