1. The best estimates are that the temperatures will rise y 2-3℃ in this century, causing considerable problems, at a total cost of US $5,000 billion.
分析:本句主句为The best estimates are that that the temperatures will rise y 2-3℃ in this century, causing considerable problems, at a total cost of US $5,000 billion.为that引导的表语从句,做are的表语; causing considerable problems为现在分词短语做伴随状语。
2. Despite the intuition that something drastic needs to be done about such a costly problem, economic analysis clearly show it will be far more expensive to cut carbon dioxide emissions radically than to pay the costs of adaptation to the increased temperatures.
分析:本句中Despite the intuition that something drastic needs to be done about such a costly problem为介词短语作让步状语;其中that something drastic needs to be done about such a costly problem为that引导的同位语从句,做the intuition的同位语;economic analysis clearly show it will be far more expensive to cut carbon dioxide emissions radically than to pay the costs of adaptation to the increased temperatures.为本句的主句,其中it will be far more expensive to cut carbon dioxide emissions radically than to pay the costs of adaptation to the increased temperatures.为宾语从句,做show的宾语,引导词省略,it为形式主语,后面的不定式为真正的主语。
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