Eqaul의 의미를 갖고 있다. 의미가 확장되면서 시간과 원인을 나타내는 의미로도 쓰인다.
2.1. ~대로, ~처럼
Do as I say. Think as I think. Tom was late as unsual.
As you know, I have to go now. As I mentioned above, we will meet at six.
2.3. ~할때, ~하면서
As I stood, the door opened. Things are changed, as time has passed.
As It was getting late, I had to leave for home. As Tom was tired, he went to bed early.
2.5. 비교문 (~처럼)
I can run as fast as you can. The results were as good as I had expected.
We used the stone as a chair. I told him as a father.
As a young man, Tom enjoyed his life. John had often been ill as a child.
His voice is as sweet as honey.
Spring flowers, as the magnolia. Mammals, as the bear on lion.