unfortunately
用法要点
句型搭配
常用于句首，后接完整句子，表示对整体情况的遗憾；也可置于句中，强调特定部分的不幸。
介词用法
通常不与特定介词固定搭配，但可后接that从句或直接修饰动词、形容词，表示原因或结果。
语域说明
适用于正式和非正式场合，在口语和书面语中均常见，语气中性偏正式，表达客观遗憾。
基础例句
Unfortunately, it started raining just as we left the house.
不幸的是，我们刚出门就开始下雨了。
I wanted to go to the party, but unfortunately, I had to work late.
我想去参加派对，但可惜的是，我得加班。
Unfortunately, the store was closed when we arrived.
不幸的是，我们到的时候商店已经关门了。
高级例句
Unfortunately, the experimental data did not support the initial hypothesis, requiring further analysis.
不幸的是，实验数据未能支持初始假设，需要进一步分析。
In the business report, it was noted that unfortunately, sales declined by 10% this quarter.
在商业报告中提到，不幸的是，本季度销售额下降了10%。
Unfortunately, the proposed policy changes may lead to unintended consequences in the long term.
不幸的是，拟议的政策变化可能在长期内导致意想不到的后果。
高频搭配
verb
adjective
noun
adverb
phrase
常见错误
错误地将unfortunately用作形容词修饰人；正确用法是作为副词置于句首或句中，修饰整个句子或动词。
错误地使用it is结构，unfortunately不能直接作表语；应改为副词形式引导句子，表达遗憾。
近义词辨析
regrettably
regrettably更正式，常用于书面语，强调可避免的遗憾；unfortunately更通用，表示客观不幸。
Regrettably, the decision was made without proper consultation. (更正式) vs. Unfortunately, the weather ruined our plans. (通用)
sadly
sadly带有更多情感色彩，强调个人悲伤或同情；unfortunately更中性，侧重事实描述。
Sadly, many people lost their homes in the flood. (情感强) vs. Unfortunately, the flight was delayed due to technical issues. (中性事实)