It helps us answer such questions as, Why should I study for my history exam?
这帮助我们回答这些类似的问题如：我为什么需要为自己的历史考试认真学习？
Do you see why I think it is brave to study law?
你们现在知道我为什么说学习法律是勇敢的么？
Any subject of study needs justification: its advocates must explain why it is worth attention.
任何学习的科目都需要解释：它的倡导者必须得解释为什么是值得关注的。
What is the New Testament and why should you study it?
什么是新约，为什么要研究新约？
Why do we need to study language and, what is more, spend much effort on it?
为什么语言要学，并且要用很大的气力去学呢？
Why do we need to study language and, what is more, spend much effort on it?
为什么语言要学，并且要用很大的气力去学呢？
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