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在gmat里面based on有三种用法: <1>句首修饰语opening modifier-->必须作用于紧贴逗号的主语,就跟所有的句首修饰语一样 比如: Based on a careful investigation, the report was finally published by the researchers last month.-->correct Based on a careful investigation, the researchers finally published the report last month.-->incorrect <2>句末修饰语-->作用于前面最近的名词比如: Edison invented the light bulb based on hundreds of thousands of experiments.-->correct The light bulb was invented by Edison based on hundreds of thousands of experiments.-->incorrect (在OG12/PREP/OG VERBAL 2th edition这三个材料上,还没有发现当based on出现在句末还可以指代主语的情况。若有误请指正。) <3>X be based on Y. 比如: Success is based on hard work.
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