在英语学习中，helping 和 helpful 都源自动词 “help”，但它们的词性和用法完全不同。本文将通过定义、例句和小测验，帮助你彻底掌握两者的区别。
helpful 表示“有帮助的”、“乐于助人的”，用来描述人或事物具有提供帮助的特质。
✅ She is a very helpful colleague.
✅ This guidebook is extremely helpful for beginners.
helping 本身不是形容词，通常用于进行时态或作为名词表示“一份食物”（口语）。
✅ I am helping my friend with his homework. （现在进行时）
✅ Would you like another helping of rice? （名词：一份食物）
❌ 错误：He is a very helping person.
✅ 正确：He is a very helpful person.
❌ 错误：This app is really helping.
✅ 正确：This app is really helpful.
请选择正确的单词填空：
“The instructions were very ______.”