have no idea后面可以接when,that,whether,where等嗎?比如I have no idea when he was ill.可以嗎?
答：可以.
析：have no idea意思上相當于don't know.只不過前者跟的叫同位語從句,后者跟的叫賓語從句.二個都屬于名詞性從句.
如：I have no idea when he was ill.我不知道他什么時候生的病.
I have no idea where he is.我不知道他現(xiàn)在在哪里.
I have no idea whether he will come back.我不知道他是不是會回來.
I had no idea that he was here.我原來不知道他在這里.
注意,不說I don't know that he is here.所以也不能說：I have no idea that he is here.
這是邏輯問題.