请从语法角度分析there is not a great deal you can do if you have what we call a street canyon-a whole set of high -rises enclosed in a street

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请从语法角度分析
there is not a great deal you can do if you have what we call a street canyon-a whole set of high -rises enclosed in a street

如果你拥有一种被称之为“街谷”的东西——一即街道中内置的一整套高楼,那么你就不需要做什么了.there is (there be 结构主谓语)not a great deal (宾语)you can do(定语从句修饰宾语)后面为if引导的条件状语...