Forming negative sentences with past perfect continuous tense is very easy if we remember how to form negative sentences with past perfect tense. We can form negative sentences with past perfect continuous tense by adding not after helping verb had.
We will take it up a notch and show you two different examples for each sentence.
Assertive: She had been using her laptop regularly before …
1. We / exercise / in the morning
2. She / practice / her speech / before the presentation
3. We / read / the project guidelines / before starting work
4. We / plan / the vacation / before deciding the budget
5. They / help / each other / during the team activity
