1. As far as

- As far as : theo như

AS far as I know ( theo như tôi biết )

As far as I know, he is a doctor ( Theo như tôi biết, anh ta là 1 bác sĩ)

- As far as sb/sth is concerned : về mặt ....

As far as benefits are concerned, the most important to me today would be health care

As far as the two phonetic variants are concerned, there are three type ..

2. As early as : ngay từ

As early as the 20

th century : ngay từ thế kỹ 20

3. As good as : hầu như

He is as good as dead : anh ta gần như đã chết

4. As much as : cũng chừng ấy, cũng bằng ấy

5. As long as: since, because, if, only if,"miễn là"

- so long as since; because. As long as you're going to the bakery, please buy some fresh bread. So long as you're here, please stay for dinner.

- so long as if; only if. 

You may have dessert so long as you eat all your vegetables. You can go out this evening as long as you promise to be home by midnight.

- for a specified length of time. You may stay out as long as you like. I didn't go to school as long as Bill did.