여러가지 시간 표현들
before, after, once, the moment, as soon as, until, by the time 등등
once 는 ever since 랑 비슷한 의미
시간을 나타내는 부사절 --> 미래 대신 현재
Before I had my first job, I was really immature.
After I got my first job, I became more mature.
Once I had a job, I became totally independent.
The moment I moved away from home, I felt like a different person.
As soon as I got my own bank account, I started to be more responsible.
Until I graduated, I'd never had any important responsibilities.
By the time I graduated from high school, I had already started working.
here comes my sentences
While I was watching TV, my friends washed dishes like slaves.
I have lived alone since I graduated from high school.
This dog will bark when strangers break into my backyard.
