think
think of和think about的区别是意思不同、用法不同、介词不同。think of的意思是想起，考虑到、想到，后常接代词、名词。think about的意思是思考、探讨，可接名词、动词ing形式或由疑问词引导的不定式或宾语从句。
例句It was a difficult situation, when you think about it.仔细想来，当时处境是很困难的。What do I think about it? How long have you got? 我是怎么想的？说来话长，你有工夫听吗？I always think of you as one of the family. 我一直把你当成自家人。