为什么这个should放句首,是什么意思?
问题描述：
为什么这个should放句首,是什么意思?
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答
Should 放前面表示虚拟 句中的should you feel .（正式用语）可以改成 if you feel .（非正式用语）类似的还有：Should you have any question,please feel free to contact me等于If you have any qquestion,please...