日语的假定表达有四种常用的表现形式。由于这四种形式因存在类似的用法,所以在实际使用时很难把握,日语能力水平测试中也经常对这一知识点进行考查。本文从此四种假定表达条件的非过去和过去性入手,探讨各自的典型用法,试分析出四种形式的异同,找出解题问题的诀窍。 There are four common expressions of Japanese hypothetical expressions. Because of these four forms of similar usage, it is difficult to grasp the actual use of Japanese proficiency testing is often the knowledge of this point to examine. Starting from the non-past and past features of these four assumed expressions, this article explores their typical usage, tries to analyze the similarities and differences between the four forms, and finds out the know-how of solving problems.