Level B1
Past Perfect Continuous
The wall was half painted. She had been painting it.
Look: The wall was half painted. She had been painting it. The job was not finished, so the piece is three words.
Forms
The wall was half painted. She had been painting it.— had been plus the -ing form for an activity continuing up to a past timeThe letter was unfinished. She had been writing it.— the same three words with another verbThe room was half clean. She had been cleaning it.— the piece starts with had
A common mistake
Wrong: She had waiting there.
Right: She had been waiting there.
So many people say She had waiting there, but been is missing. We say: She had been waiting there.
More examples
The meal was half cooked. She had been cooking it.
Cooking works the same way: The meal was half cooked. She had been cooking it.
She had been watching the door. Her work was unfinished.
And so does watching: She had been watching the door. Her work was unfinished.