It is silly fo you not to forgive others for their mistakes.可以说成It is silly fo you to don't forgive others for their mistakes.不是说It is+adj.of sb.(not)to do sth.
问题描述：
It is silly fo you not to forgive others for their mistakes.可以说成
It is silly fo you to don't forgive others for their mistakes.
不是说It is+adj.of sb.(not)to do sth.
答
It is silly of you not to forgive others for their mistakes.不可以说成 It is silly of you to don't forgive others for their mistakes.
答
这个句子错了
答
只能用It is+adj.of sb.(not)to do sth.这个句式
不定式 to加动词原形哦 不可能是 to don't
所以表示否定只能说 to not forgive 明白?