think different,但differently是形容词啊？！怎么能修饰动词？

请看下面的短语：

1.think different.

2.think differently.

3.think something different.

4.think something that is different.

5.think of something different.

现在人们越来越讨厌使用以‘-ly’结尾的副词,以至人们喜欢选择1式,而不是2式,3式是4式的简略式,但在特殊情况下,宁可用5式。