theybelieveittobehelpfulandinteresting翻译,用到了哪个语法急

问题：theybelieveittobehelpfulandinteresting翻译,用到了哪个语法急

答案：↓↓↓

华渊的回答：

网友采纳　　人们相信它有用且有趣.动词不定式作宾语补足语.believe后面接的不是宾语从句,如果接宾语从句,应该表达为：Theybelieve(that)itishelpfulandinteresting.

葛订记的回答：

网友采纳　　太谢谢您了