1. 对...一点也不知道, 完全不知道:We have no idea of their having done such kind of thing. 我们不知道他们干过这种事情.... | have no idea of 对...一点也不知道, 完全不知道 | People hate being praised for nothing. 人们不喜欢无缘无故的赞扬...
2. 不知道... 一点不知道:have no idea 没谱儿,不知道 | have no idea of 不知道... 一点不知道 | have nothing to do with 与...无关; 风马牛不相及
3. 对...一无所知:be confused 感到困惑 | have no idea of 对...一无所知 | measure distamce in time 用时间测量
4. 不知道:have mercy on sb 同情,怜悯 | have no idea of 不知道 | have no choice/alternative but to do 只好做