第3题: [单项选择]The italicized part of the sentence "Is it the teacher's job to motivate the child at school" is used as ______. A. object clause B. subject clause C. attributive clause D. complement clause 参考答案:B 答案解析:该题中it is…to do…这个句式是一个主语从句,其中it是形式主语,真正的主语就是不定式,it is…that-clause这个句式也是主语从句,其中真正的主语就是that从句;A选项的obje