because, as, since or for
When do we use because, as, since and for?
Word | Explanation | Example |
---|---|---|
because | The reason is very important in the sentence. | The students could go home earlier because the teacher was ill. Because the teacher was ill, the students could go home earlier. |
as | The reason is already known. | As we read, we learn. |
since | The reason is already known. (more formal than as) | Since we were in the computer lab, our English has improved. |
for | The reason is given at the end of the sentence. The clause with for cannot be used in inital position. |
We went to a small restaurant - for we were hungry. |