举例来看: 1.形式主语 It is very nice to see you. 此句中,it是形式主语,代替后面的动词不定式作形式主语 2.形式宾语 I think it important to read some books.此句中的it就是形式宾语,本句的结构成分是:I是主语,think是动词,it是形式宾语,真正的宾语是后年的动词不定式to read some books
举例来看: 1.形式主语 It is very nice to see you. 此句中,it是形式主语,代替后面的动词不定式作形式主语 2.形式宾语 I think it important to read some books.此句中的it就是形式宾语,本句的结构成分是:I是主语,think是动词,it是形式宾语,真正的宾语是后年的动词不定式to read some books