什么是 completing？
Completing 是动词 complete 的现在分词或动名词形式，常用于表示“完成某事”的动作过程。它在句子中可作主语、宾语、定语或状语。
常见用法结构
- be + completing：用于进行时态，如 “She is completing her thesis.”
- have/has been completing：现在完成进行时，强调持续完成的动作。
- 动名词作主语/宾语：如 “Completing the project on time was challenging.”
- 介词后接 completing：如 “He is focused on completing the task.”
实用例句
- I am completing my homework before dinner.
- Completing this course will help you get certified.
- They have been completing assignments all week.
- After completing the form, please submit it online.
注意事项
注意区分 completing（正在完成）与 completed（已完成）。前者强调过程，后者强调结果。例如：
- She is still completing the report.（她还在写报告。）
- She has already completed the report.（她已经写完报告了。）