现在完成进行时
Present Perfect Continuous
现在完成进行时强调一个从过去开始并一直持续到现在、或刚刚结束的动作所持续的时间。由 have/has been + 动词-ing 构成，侧重过程而非结果。
何时使用
用于在过去开始并且仍在进行中的动作，或者刚刚结束并带有明显结果的动作。通常与 "for"（持续时间）和 "since"（起始点）搭配。
结构
S + have/has been + V-ingI have been studying English for five years.
我**一直在学**英语已经五年了。
S + haven't/hasn't been + V-ingShe hasn't been sleeping well lately.
她最近一直**没睡**好。
Have/Has + S + been + V-ing?Have you been waiting long?
你**等**很久了吗？
信号词
- for
- since
- all day
- all morning
- lately
- recently
- how long
例句
I have been working here since 2020.
我从2020年起就**一直在**这里**工作**。
They have been playing football for two hours.
他们已经**踢**了两个小时的足球。
Has it been raining all day?
**下**了一整天的雨吗？
She has been learning Spanish for six months.
她已经**学**了六个月的西班牙语。
We haven't been waiting very long.
我们**没**等多久。
拼写规则（第三人称单数）
| 大多数动词 | 加 -ing | work → working, study → studying |
|---|---|---|
| 以不发音的 -e 结尾 | 去 -e 加 -ing | write → writing, live → living |
| 以辅音-元音-辅音结尾的短动词 | 末尾辅音双写 + -ing | run → running, swim → swimming |
常见错误
I am studying English for five years.
I have been studying English for five years.
表示从过去延续到现在的时长，要用现在完成进行时，而不是现在进行时。
She has been knowing him for years.
She has known him for years.
状态动词（know、love、believe）通常不用进行形式；改用现在完成时。
提示
"for" 与时间长度搭配（for two hours, for five years），"since" 与起始点搭配（since 2020, since Monday）。如果动作还在发生并且你关心已经多久了 —— 用现在完成进行时。