简单句
一.句子必须具备主谓结构，主语是谓语动作发出者，如果有宾语，宾语是动作的承受者
二.句子基本结构（分类）
a.主谓
b.主谓宾（实义动词）
c主谓表（系动词）
d.主谓双宾
e.主谓宾补
三.句子的成分（词性）
谓语
主语
并列句
一.就是用连词连接两个句子。逗号不能连接两个句子，必须是句号。
两句变一句三个方法：独立主格，并列句，从句
I loving you,you love that dog.独立主格
I love you,but you love that dog.并列句
although I loving you,you love that dog.让步状语从句。
二.常见的并列连词
1.平行关系，and,not only..but also...,
similarly equally likewise at the same time in the meanwhile
2.转折关系：but,yet,while,whereas
however nevertheless conversely unexpectedly unfortuntaly on the contrary by contrast
3.选择关系：or ,whwther.. or..
alternatively
4.因果关系：for ,so
therefore thus consequently as a result
5.递进关系：then
besides furthermore moreover attitionally subsequently in addition