Some time ago I wrote a text on one site where people check whether what you've written is correct or not.
I wrote a sentence “Ich bin krank seit einer Woche”, and one person corrected me saying that it should have been like “Ich bin seit einer Woche krank.”
I know that the structure of sentences in German is a little complicated and I at least try to find out some rules but with this one I am so confused especially because I couldn't find anything on the Internet about it.
Could you please tell me why krank is at the end? Are all adjectives treated like this and should I always put the adjective at the end?