I am back ,am是动词,做谓语,back是副词做表语,是主系表结构,是的吗.那么,当I作为主语,back作为谓语动词的时候又是怎么样的状况呢,没这么出现过.

I am back ,am是动词,做谓语,back是副词做表语,是主系表结构,是的吗.那么,当I作为主语,back作为谓语动词的时候又是怎么样的状况呢,没这么出现过. 这句话宾语是什么I am advanced in writing English .主语：I 谓语动词：am谓语动词的宾语：advanced是形容词,不能做宾语吧.in writing english,是谓语动词的宾语? be动词不能单独做谓语,那I am happy的谓语是什么?Love is of utmost importance to us humans.的谓语是哪个呢？ I am reading a book.am reading 但doing不是非谓语动词吗?非谓语动词能做谓语吗? 实意动词能单独做谓语吗?比如i play game.还是i am play game. I am reading in bedreading 是谓语动词吗?那am 是什么?中文意思是我正在床上阅读. be 动词是谓语吗?例如：i am a boy.we are boys.这里的 am ,are i am looking for the bus ,谓语动词是什么 被动语态的谓语动词是IS怎么办比如I am a boy I am come back. 强调句 强调谓语 如：i am a girl.这句话要是想强调系动词am的话,是这样吗：i be am a girl. I am very glad to hear that...的句子结构成分是怎样?that引导的是什么动词的宾语to hear非谓语做什么 问一个英语句式的问题举一个简单的例子 I am happy 这句话中主语是I 谓语动词是 am 还是be happy,happy在这个句子中做的是什么成分 英语中的助动词 be 一定要修饰主要动词组成谓语词组吗?比如这一句 i am a student .助动词am 修饰的是哪一个主要动词? I am doing my homework.中谓语部分是am还是am doing? my friends with i 后的谓语动词 是 is 还是 arei with my mother 后的谓语动词用 是 is 还是 are 还是 am 助动词和实义动词能做谓语 am is are was were +doing这里的am is are was were 是助动词吗 doing是实义动词吗 doing不是非谓语动词吗 I am listening是什么简单句中的什么句型?是主语加谓语吗?还是主系表?be动词am在这里是助动词还是系动