Definition:
The present perfect continuous tense is used to describe an action that began in the past and is still ongoing in the present. It emphasizes the duration or continuity of the action.
Usage of “For” and “Since”:
- For is used with a period of time (e.g., two hours, five days, a long time).
- Since is used with a specific point in time (e.g., morning, 2010, Monday).
1. Affirmative Sentence
Structure: Subject + has/have + been + verb (ing) + object.
- She has been studying English.He has been living here since 2010.
- They have been playing soccer for an hour.
- I have been working on this project.
2. Negative SentenceStructure: Subject + has/have + not + been + verb (ing) + object.
- He has not been working since morning.She has not been cooking.
- We have not been traveling fore long time.
3. Interrogative Sentence
Structure: Has/Have + subject + been + verb (ing) + object?
- Have they been playing football for an hour?
- Has she been waiting since noon?
- Has he been working on this assignment?
4. Negative Interrogative Sentence Structure: Has/Have + subject + not + been + verb (ing) + object?
- Has she not been waiting since yesterday?
- Have you not been studying for three hours?
- Has he not been attending the meetings?
- Have they not been cleaning the house for hours?