2013年考研英语一真题句子解析： There is no doubt that gardens evidence an irrepressible urge to create, express, fashion, and beautify and that self-expression is a basic human urge; yet when one looks at the photographs of the gardens created by the homeless, it strikes one that, for all their diversity of styles, these gardens speak of various other fundamental urges, beyond that of decoration and creative expression.

gardens evidence an irrepressible urge to create, express, fashion, and beautify and that self-expression is a basic human urge

"and" 连接两个 "that" 引导的宾语从句（第一个 "that" 省略）："(that) gardens evidence an irrepressible urge..." 和 "that self-expression is a basic human urge"。这两个从句都是 "There is no doubt" 的同位语从句，通过 "and" 对等并列，共同说明 "no doubt" 的内容。

when one looks at the photographs of the gardens created by the homeless, it strikes one that, for all their diversity of styles, these gardens speak of various other fundamental urges

主句是 "it strikes one that...these gardens speak..."，其中嵌套了一个 "when" 引导的时间状语从句 "when one looks at the photographs of the gardens created by the homeless"（第一层）。该状语从句内部又嵌套了过去分词短语 "created by the homeless" 作后置定语修饰 "gardens"（第二层非谓语结构）。形成从句套非谓语的两层嵌套。

the gardens created by the homeless

过去分词 "created" 作后置定语修饰名词 "gardens"，表示被动关系（花园被无家可归者创造）。"created by the homeless" 整体作定语，说明是哪些花园。

it strikes one that, for all their diversity of styles, these gardens speak of various other fundamental urges

"it" 在 "strikes" 前充当形式主语，真正的主语是后置的 "that" 从句 "that...these gardens speak of various other fundamental urges"。这是典型的 "it strikes sb. that..." 句型，"it" 本身无实义，仅占据主语位置，避免头重脚轻。

, for all their diversity of styles,

介词短语 "for all their diversity of styles" 由逗号标示，插入在 "that" 从句的主谓之间（"these gardens" 和 "speak" 之间），表示让步含义（尽管风格多样）。该成分可以抽离，主干 "these gardens speak of..." 依然完整。

There is no doubt that

"There is no doubt that" 是一个固定句式,用于引出一个不容置疑的事实或观点。结构为 "there is no doubt" + that 从句,其中 that 引导的是同位语从句,说明 doubt 的具体内容。

这个句式在学术写作和正式语境中常用于表达确定性,为后续可能出现的转折或限制做铺垫。注意 "that" 不可省略,且从句必须完整。

与 "there is no denying that"(不可否认)相比,"there is no doubt that"(毫无疑问)强调的是确定性而非让步承认,语气更加肯定。

在复杂句中,这个结构可以引导并列的多个 that 从句(如本句中用 "and that" 连接两个从句),表达多个毫无疑问的事实。

yet

"Yet" 作为连词出现在分号或句首,连接两个对立的分句,表示转折关系。本句中 "yet" 前面用分号,引出与前文相反的观察。

前文用 "there is no doubt that" 肯定了花园体现创造和自我表达的冲动,"yet" 后转而指出这些花园还表达了装饰和创造表达之外的其他基本冲动,形成「承认 A,但实际还有 B」的逻辑。

识别 "yet" 的转折功能需要把握前后分句的语义对比:前句强调创造和美化冲动,后句通过 "beyond that of decoration and creative expression" 明确指出存在超越这些冲动的其他因素。

"Yet" 的转折标记作用在篇章中往往预示作者立场的微妙转向或对前文观点的补充限制,是把握论证推进的关键信号。