PAST PERFECT CONTINUOUS TENSE
Menekankan lamanya sebuah aktivitas yang sedang terjadi selama beberapa waktu sebelum aktivitas lain terjadi di masa lampau
FORMULA
(+) S + had + been + V-ing + O
(-) S + had + not + been + V-ing + O
(?) Had + S + been + V-ing + O
TIME SIGNAL
1. For + period of time + before + S.past
2. For + period of time + when + S.past
EXAMPLE
1. (+) We had been listening to music for an hour when it started to rain
2. (-) She hadn't been cutting a beautiful flower for 50 minutes in the garden yesterday
3. (?) Had Ana been doing her homework for 10 minutes before the teacher came in ?