1.简单句 I teach classical music (I 主 teach 谓 classical music 宾)
2.并列句 I love you and you love me (有多套各自完整的主干结构)，I love you but you love him.
3.复合句 I love the novel which is fascinating(定语从句) 既有主干结构又有从句
定语从句一般来说是在后面修饰前面的某个名词，对它进行修饰与限定。
what you know is totally wrong(名词从句--主语从句) what you know 句子做主语，用句子做主语称为主语从句。
宾语也称受词，是指一个动作（动词）的接收者 往往表示动作支配的对象，并且总是处在动词后头，其由名词，代词，名词化形容词，不定式，宾语从句等来担任。
直接宾语：指物或指事就是 间接宾语：指人或者动物就是间接宾语
I wrote father a letter yesterday.(Father是间接宾语，letter是直接宾语)。
love you中的love是动词宾语，介词宾语 in the house.
谓语：对主语动作状态或特征的陈述或说明 谓语动词位置一般位于主语之后，经常用动词和形容词搭配充当谓语动词
宾补（宾语补足语）放在宾语之后，对宾语受到谓语动词作用之后产生的变化。所处状态进行补足说明。eg: I 'm going to paint it park.
[不定式做宾补]
1.We believe him to be guilty (to be guilty是该句的宾语补足语) 他+有罪 [不定式做宾补]
2.形容词做宾补 I found the classroom was empty. [empty作宾补]
3.副词做宾补 He took his cap off [off作宾语]
4.名词作宾补 At the meeting,We elected him monitor [在会议上我们选他为班长].
主语特点：名词/代词/数词/不定式/动名词/句子等
Two plus six is eight [数词作主语]
To beat you is to love you 不定式 to do 结构作主语.
watching English movies is a good way to learn English [动名词作主语]
What we shall do next is not yet decided.主语从句作主语
表语 1.常有名词,形容词,介词短语，动词ing形式,不定式，从句来充当.
重点:表语是说明主语身份,性质,品性特征与状态的,位于系动词之后,与系动词联系十分紧密。
[be,become,appear,seem,look,feel,get,taste等]
The trouble is that we are short of funds 表语从句
状语：1.副词/形容词/介词短语/分句等
2.描述情况，时间所处方式，条件，对象，肯定，否定，范围和程度
The travelers came back,safe and sound 形容词作状语
