A study last year by the National Center for Science Education, a non-profit group of scientists and teachers, looking at how state public schools across the country address climate change in science classes, gave barely half of US states a grade B＋or higher.A study last year by the National Center for Science Education, a non-profit group of scientists and teachers, looking at how state public schools across the country address climate change in science classes, gave barely half of US states a grade B＋or higher.A study[last year](by the National Center for Science Education), <a non-profit group of scientists and teachers>, (looking at how state public schools across the countryaddressclimate change [in science classes]),gavebarely half of US states a grade B＋or higher.[主干]A study gave barely half of US states a grade B+ or higher.”一项研究勉强给了全美一半的州B+或是更高的分数”。 |--[状语]last year 时间状语 “去年” |--[定语]by the National Center for Science Education 介词短语做后置定语，修饰study，“由美国国家科学教育中心” |--[同位语]a non-profit group of scientists and teachers 做前面”科学教育国家中心”的同位语， “一个由科学家和教师组成的非盈利组织” |--[定语]looking at how state public schools across the country address climate change in science classes 现在分词做后置定语修饰study； looking at +宾语从句“着眼于/专门考察全国各地的公立学校如何在科学课上教授气候变化这个问题” |--[主语]state public shools“公立学校” |--[定语]across the country“全国各地的” |--[宾语]climate change“气候变化” |--[状语]in science classes“在科学课上”|--[直接宾语]a grade B+ or higher“B+ 或更高的成绩”|--[间接宾语]half of US states“美国一半的州”1、National Center for Science Education (NCSE) 美国国家科学教育中心
2、looking at 着眼于，考察于
3、address 处理、应对、着手解决（某个问题或话题）
1、“得意”--得到了句子的灵魂，获取核心意思与逻辑通过 gave barely 这两个词的组合，我们可以敏锐地捕捉到了作者隐藏在数据背后的态度和情感色彩。这也是阅读高分句子时需要的“语感”。
作者通过“barely”这个词，委婉地表达了这样一个核心观点：美国公立学校在气候变化教育方面表现不佳，仍有很大的改进空间，现状并不令人满意。
去年，由科学家和教师组成的非营利组织“美国国家科学教育中心”进行了一项研究，考察了全美公立学校如何在科学课上讲授气候变化问题。该研究仅给半数的州打出了B+或以上的分数。
