**中文释义：**

"As a matter of fact" 是一个英语短语，直译为“事实上”，在中文中通常被用来强调事实或者纠正误解，表达说话者对于某个观点或情况的肯定态度。

**英文释义：**

"As a matter of fact" is an English phrase used to emphasize a statement or correct a misconception, indicating the speaker's affirmation towards a particular viewpoint or situation.

**用法示例：**

1. **引出新信息：**

   - I thought he was out of town, but as a matter of fact, he's right here in the office.

   （我以为他出城了，但事实上，他就在这间办公室里。）

2. **纠正错误认知：**

   - You said it was impossible, but as a matter of fact, I've already completed the task.

   （你说那是不可能的，但事实上，我已经完成了这个任务。）

3. **加强语气：**

   - I'm not tired at all; as a matter of fact, I feel more energized than ever.

   （我一点也不累，事实上，我觉得比以往任何时候都更有精力。）

4. **反驳论点：**

   - Some people believe it's too late to learn a new language, but as a matter of fact, research shows that adults can learn just as effectively as children.

   （有些人认为学习新语言太晚了，但事实上，研究表明成年人学习的效果和孩子一样好。）

**同义词辨析：**

1. **In fact**: 这个短语与 "as a matter of fact" 意思相同，但语气稍弱一些，常用于提供额外信息或澄清。

   - Example: In fact, I've been practicing for months to get ready for this competition.

2. **Actually**: 这个词可以用来强调事实，纠正误解，或表示意想不到的情况。

   - Example: I'm not a doctor, actually, I'm a nurse.

3. **To tell you the truth**: 这个短语用于表示诚实或坦率地说，有时带有一些纠正或揭示真相的意味。

   - Example: To tell you the truth, I didn't like the movie at all.

4. **Indeed**: 在口语中，"indeed" 可以用来强调事实，但在书面语中，它通常用于同意或确认前面的观点。

   - Example: He was exhausted; indeed, he fell asleep immediately after dinner.