第二个:Why he murdered his wife is clear now. 在这组例子中,第一个句子是名词the reasons充当主语,句型简单,意思清晰:原因已经清楚了。在第二个句子中,我们发现主语的部分由一个从句why he murdered his wife来担当。注意它的构成是:引导词+陈述句。根据这个从句出...