定义 / 说明
在 C1 级别，Present Simple 与 Present Continuous 的对比不再只是“习惯 vs 现在”。说话者还会借它们表达态度、描述暂时趋势、谈固定的将来安排（如时刻表）。Present Continuous 与 always/constantly 搭配时可带情绪色彩，常表示不满；Present Simple 则可显得更客观、事实化。两者选择常改变的是“说话者视角”，不只是时间参照。
关键规则
- present simple：用于事实、习惯、时刻表、状态：The train leaves at 6.
- present continuous：用于进行中动作、暂时状态、变化趋势：More people are working from home.
- always / constantly / forever + present continuous：表示反复行为并带情绪语气：She is always complaining.
- 多数 stative verbs 通常不用进行时，除非意义改变：I think vs I am thinking about it。
- 高阶使用中，形式选择可体现你把事物看作 permanent / temporary / neutral / annoying。
例句
- She is always complaining about the weather. - 她总在抱怨天气。
- The train leaves at 6 o'clock. - 火车 6 点发车。
- More students are choosing online courses this year. - 今年更多学生在选择网课。
- I work in finance, but this month I am helping the marketing team. - 我在金融行业工作，但这个月在协助市场团队。
- You are being rude today. - 你今天表现得很不礼貌。
常见错误
- ❌ She always complains these days. -> ✅ She is always complaining these days.
- ❌ The train is leaving at 6 every Monday. -> ✅ The train leaves at 6 every Monday.
- ❌ I am knowing the answer. -> ✅ I know the answer.
提示
- 不只问 When?，还要问 说话者想把它说成什么感觉？
- 进行时常带有“暂时性”“变化中”或“态度色彩”。