作为条件表现的“ば”、“たら”、“と”与“なら”有各种用法,其内容比较复杂。而在此文中,较系统性地叙述了“ば”、“たら”、“と”与“なら”的使用场景、成立条件,还进一步比较了其异同点。这样的话,能够使学生从感性和理性两性上来正确理解并掌握“ば”、“たら”、“と”与“なら”的意思和用法. There are various usages of “ba”, “ta”, “to” and “na ra” as conditions, and their contents are complicated. In this article, we narrate the usage scenarios, establishment conditions and comparison of the similarities and differences between “ba”, “ta”, “と” and “na ra” more systematically. In this way, students can correctly understand and grasp the meaning and usage of “baba”, “tara”, “to” and “naara” from the perspective of sensibility and rationality.