G. The Present Perfect Continuous is formed with have/has been and the ‘-ing’ form of the verb. (e.g. She has been living in Liverpool all her life.)
G1. We use the Present Perfect Continuous for an activity that has recently stopped or just stopped. There is a connection with now. (e.g. Jay is very tired. He's been working very hard. (= he's tired now))
a. use the Present Perfect Continuous with how long, for ~ and since ~. The activity is still happening or has just stopped. (e.g. They’ve been staying with us since last week. It has been raining for two hours. How long have you been learning English? (= you're still learning English))
b. can use the Present Perfect Continuous for actions repeated over a period of time. (e.g. Every morning they meet in the same café. They've been going there for years)
G2. I'm doing (Present Continuous) (e.g. Don't disturb me now. I'm working. Hurry up! We're waiting)
a. I have been doing (Present Perfect Continuous) (e.g. I've been working hard. Now I'm going to have a break. We've been waiting for an hour)
Idiom 365
Cut Corners(verb): to do something in the easiest or cheapest way by skipping something important
Example: Can not be agreed to cut corners by building the bridge out of cheap steels instead of specification requirements.