Grammar <%ea%b3%bc%ea%b1%b0-vs-%ea%b3%bc%ea%b1%b0%ec%a7%84%ed%96%89%ed%98%95 class="post-title"> 시제 Case Study (2) %ea%b3%bc%ea%b1%b0-vs-%ea%b3%bc%ea%b1%b0%ec%a7%84%ed%96%89%ed%98%95>