英语写作中常用的强调重点符号包括加粗、斜体、下划线、标点符号和字体大小。这些符号可以帮助突出文章中的重要信息，使读者更容易理解和记忆。选择合适的符号来强调重点，可以使文章更加生动、有力。
1. 加粗
在文章中，我们可以用加粗的方式来强调某个词或短语，使其更加醒目。例如：
- Important information should be highlighted in the text.
- The main purpose of the study is to investigate the effects of exercise on mental health.
2. 斜体
除了加粗，我们还可以用斜体来强调某个词或短语，使其在文章中更加突出。例如：
- The research shows that italicizing key words can help readers focus on important information.
- The author used italics to emphasize the main arguments in the article.
3. 下划线
虽然下划线在印刷时不太常用，但在电子文档中，下划线常常被用来强调重点信息。例如：
- The underline function in Word can be used to highlight important words or phrases.
- We should avoid using too much underline in our writing, as it can be distracting for readers.
4. 标点符号
除了文字格式外，标点符号也可以用来强调重点信息。例如：
- The company's goal is simple: to provide the best possible service to its customers.
- The professor emphasized that there was one key point to remember: always cite your sources.
5. 字体大小
在某些情况下，我们还可以通过调整字体大小来强调重点信息。例如：
- The title of the report should be in a larger font size than the rest of the text.
- The subheadings in the article should be in a slightly larger font size than the body text.
