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题库 / Prep2007E2-SC-15
In the mid-1920s the Hawthorne Works of the Western Electric Company was the scene of an intensive series of experiments that would investigate changes in working conditions as to their effects on workers' performance.
that would investigate changes in working conditions as to their effects on workers' performance
investigating the effects that changes in working conditions would have on workers' performance
for investigating what the effects on workers' performance are that changes in working conditions would cause
that investigated changes in working conditions' effects on workers' performance
to investigate what the effects changes in working conditions would have on workers' performance
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E what是名词，不能引导定语从句
如果what effect作investigate的宾语，后面的句子作定语从句修饰what effect，则先行词没有在定语从句中充当成分，
应该说 to investigate what the effects THAT changes in working conditions would have on workers' performance
注意这个that在定语中充当了成分，不像宾语从句的that，不可以省略
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