I was a student.这个有哪些句子成分？

i am a student句子成分~

I am a student 我是一个学生 I是主语，am 是谓语 a student 是宾语

你的句子属于主系表结构.
参考如下：
主谓宾=主语+实义动词+宾语,be是系动词,不能用于主谓宾中.
主系表=主语+系动词(最常见的是be,还有“五感”feel、look、sound、smell、taste和其它动词如become、grow…等）+表语（名词、代词、形容词、时间地点副词、介词短语、表语从句…等）.
I am a boy.这句话中没有宾语,属于主系表,I是主语,系动词am是谓语动词,a boy是表语,系动词和表语合起来作谓语.由此可见在主系表中,谓语≠谓语动词；而在主谓宾中,谓语=谓语动词,如I love you.
总之,系动词和宾语是不共戴天的仇人,誓不两立.系动词后面接的是表语,而宾语前面接的是谓语.

这是一个，主语加系动词加表语，是一般过去时的句子，表语由名词短语充当

I was a student我是一个学生。这个句子的句子成分是这样的
I 人称代词作主语
was 系动词作谓语动词
a 冠词，用于名词前来说明名词的含义
student 名词做表语
也就是说这是一个主系表结构的句子。

举个例子：I am a student,I就是主语，am就是谓语，student就是宾语，I was a student last year中的last year就是状语，是说我去年是个学生，比第一个句子说的更加清楚..
再来个例子：I bought some books last night .I--主语..bough--谓语..some books--宾语..那个last night就是状语..
定语就是形容词嘛...（形容某样东西的都是定语啊..）
举个例子：I am a new student.I就是主语，am就是谓语，student就是宾语..

I was a student.这句话为主系表结构，其中I作为主语，was是系动词，a student是表语，且为过去时态。

它与后面句子的其余成分无语法联系。现代汉语的感叹词有“啊”、“哎呀”、“天呀”等。 用途分类 Oh 表示惊讶、指责、痛苦、称赞、懊恼等,可译为“哦”、“哎呀”、“噢”“啊”、“呀”等。 “Oh, wh...

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舞钢市19355588206： i were a student.对吗? - ？
函禄麦咪： 在一般情况下是不行的,应该是 I was a student 但在虚拟语句中可以这样 比如:If I were you 意思是如果我是你 但事实上我不可能是你

舞钢市19355588206： i were a student. - ？
函禄麦咪：[答案] 在一般情况下是不行的,应该是 I was a student 但在虚拟语句中可以这样 比如:If I were you 意思是如果我是你 但事实上我不可能是你

舞钢市19355588206： 问一个英语问题是I was a student.还是I were a student. - ？
函禄麦咪：[答案] 都是Be的过去时.are-were; am,is-was 在虚拟语气中,不管人称是什么都要用were,比如,“If I were you,I would...”意思是,如果我是你,我就会…….

舞钢市19355588206： 英语小知识高分啊1.I was a student.(改为一般疑问句)2.She studied hard last year.(改为一般疑问句)3.They were rude just now.(改为否定句) 4.He saw ... - ？
函禄麦咪：[答案] 1.Were you a student? 2.Did she study hard last year? 3.They were not rude just now. 4.He didn't see a snake a minute ago. 5.Were you born in Beijing? 6.Jack hurried home after school. 楼主请说清楚是要哪个词的同义词

舞钢市19355588206： 变一边疑问句,肯定回答,否定回答,变否定句 i was {a student two years ago}根据画线部分提问变一边疑问句,肯定回答,否定回答,变否定句,根据画线... - ？
函禄麦咪：[答案] 1 一般疑问句:Were you a student two years ago?Yes,I was.No,I wasn't.否定句:I wasn't a student two years ago.提问:1 What did you do two years ago?2 When were you a student?2 Did he play basketball l...

舞钢市19355588206： was能照什么句子 - ？
函禄麦咪： 上面两个人回答得有错误 His was a hero.I was a student.我来造个 It is he who has been in the Party.这是强调句 可能也有错误,请大家指教

舞钢市19355588206： i was a student one year ago.(变成一般疑问句) - ？
函禄麦咪： Were you

舞钢市19355588206： 变一边疑问句,肯定回答,否定回答,变否定句,根据画线部分提问要两种 1 I was {a student two years ago变一边疑问句,肯定回答,否定回答,变否定句,... - ？
函禄麦咪：[答案] 1.I was a student two years ago. Were you a student two year ago?Yes,I was.No.I wasn't. I wasn't a student two years ago. What did you do two years ago? When were you a student? 2.He played basketball last Sunday. Did he play basketball last Sunday...

舞钢市19355588206： 什么时候用i am,什么时候用i was？
函禄麦咪： 一般现在时表示经常性的就用I am, 如果表示过去的就用I was, 如:我以前是学生.I was a student. 我是学生(就是说现在也是学生)I am a student.

舞钢市19355588206： I would have liked to have had it when I was a student.这是什么语法结构,虚拟语气吗? - ？
函禄麦咪： 这个是虚拟语气 我多想在我还是学生的时候就已经拥有这个. 说明他是学生的时候还没有拥有这个 would have done....was/were是虚拟语气的标志