“从未”: never “从来”: since always

从未 = never whereas 从来 = always, at all times and 从来没有 = never However, I've never heard "从未" being used, only "从来没有" :(

从未：have never done/never did . e.g.我从未爱过你（I've never loved you.） About 从来，there are two cases. A. When 从来 is followed by negative words like 没or不，it means the same as 从未 does, e.g 我从来没/都没爱过你（I've never loved you）；我从不说谎=我从未说谎（I've never lied） B. When 从来 is not followed by negative words, it means that you always do something. e.g. I always do my shopping in this supermarket. (我从来都在这家超市买东西). you can also put it in this way: I never did my shopping in other supermarkets besides this one. (我从未在其它超市买过东西。) HOPE that i made myself clear.

“从未”是从过去到现在都没有做过的，而“从来”可以表示表示自己一直都是这样

“从未”是从过去到现在都没有做过的，而“从来”可以表示表示自己一直都是这样