1."It is a gift very differs from yours."这个有问题,一个句子只有一个谓语,这个句子有两个,“is”和“differs”。可以这样写“It is a gift very differing from yours”2.“It is a gift different from yours”没问题,different是形容词.介词短语可以作定语。3“It is a gift which is different from yours”没问题.which可以指代前面一句话或者宾语,主语。这里显然是指代gift.which引导宾语从句,做主语,is different是实义动词,做谓语。