If only
US /ɪf ˈoʊn.li/
UK /ɪf ˈəʊn.li/
感叹词
要是, 但愿
used to express a wish or regret, often about something that is impossible or did not happen
示例:
•
If only I had studied harder for the exam.
要是我考试再努力一点就好了。
•
If only we had more time, we could finish the project.
要是我们有更多时间，就能完成这个项目了。