将that改为 it .此题考查结构:find it +adj.+ to do sth.发现做某事是...的.其中,it作形式宾语,不定式作真正的宾语,incredible是形容词作宾补.that可以引导宾语从句,但此句中没有宾语从句呀.that不能作形式宾语,因此...found后不能是宾语从句么？我以前背过一篇短文中就是从句中省略主语而变成不定时found后可以跟宾语从句呀,如: He found that the book was very interesting .但你所说的从句中省略主语而变成不定式的情况,我还很少见过.你能否给个例子?问题中那个句子如果改成如下的句子,那么that 后就是宾语从句了. Tom found that it was incredible to adapt to the climate so soon where he would settle down. 但用宾语从句不如用it 作形式宾语来得简洁, 而且, 根据改错题一般只能改一个词的原则,把that改成it 是最佳的改法.