"何必再回头"是中文,意思是"为什么要再回头看"或"为什么要再回头想起"。

这个表达的英文翻译可能有多种,具体取决于你想要表达的意思。如果你想表达"为什么要再回头看"的意思,你可以说"Why turn back?"或"Why look back?"。如果你想表达"为什么要再回头想起"的意思,你可以说"Why turn back to remember?"或"Why look back to reminisce?"。

例句:

何必再回头,那些往事已成过去。(Why turn back? Those past events are already in the past.)
何必再回头,我们应该把注意力放在现在和未来。(Why look back? We should focus on the present and the future.)
何必再回头想起那些不愉快的回忆?(Why turn back to reminisce about those unpleasant memories?)
何必再回头,我们已经有了新的计划和目标。(Why look back? We already have new plans and goals.)