Obviously——used to mean that a fact can easily be noticed or understood.

　　Apparently——①used to say that you have heard that something is true, although you are not completely sure about it ②according to the way someone looks or a situation appears, although you cannot be sure.

　　Evidently——(slightly formal)used to say that something is true because you can see that it is true.

　　Obviously是依然是最地道的“明显”，跟形容词形式意思一样，evidently虽然也是这个意思，但《剑桥高级学习者词典》指出此词略微正式，与obvious相比，’it is usually better to choose the word obvious’，因此副词也比较正式。