still的使用方法

You had difficulties, still you could have done it better.

still为副词，前面为逗号的首要条件下，可以如此用吗？

可以。 still 的意思是“虽然这样仍然”、“但还”。如：

His stomachache grew worse, still he didn't complain. 他的胃愈加痛，但他还是没抱怨。