I. 简单句（Simple sentence）主语+谓语+宾语
I love my Mom.
I go to school everyday.
II. 复合句（ Compound Sentence）
Beijing is in the North and Nanjing is in the South.
(特点：When two independent clauses, or complete sentences are joined together, they form one compound sentence.
复合句是由两个独立的句子组合在一起构成的。例句中，有下面两个完整并且独立的句子组成：
Beijing is in the North.
Nanjing is in the South.
III. 复杂句（Complex Sentence）
My uncle, who is seventy years old, works on a farm.
(特点：When an independent clause and a dependent clause are joined together; they form one complex sentence.
复杂句是由一个独立的句子加一个从句构成的。)
China is a country that its history is very long.
China is a country. (独立句子)
That its history is very long (从句)
IV. 复杂句+复合句（Compound sentence+ Complex sentence）
Studying English is important because a lot of jobs need
people know English; moreover, learning English helps
people understand other coun
I love my Mom.
I go to school everyday.
II. 复合句（ Compound Sentence）
Beijing is in the North and Nanjing is in the South.
(特点：When two independent clauses, or complete sentences are joined together, they form one compound sentence.
复合句是由两个独立的句子组合在一起构成的。例句中，有下面两个完整并且独立的句子组成：
Beijing is in the North.
Nanjing is in the South.
III. 复杂句（Complex Sentence）
My uncle, who is seventy years old, works on a farm.
(特点：When an independent clause and a dependent clause are joined together; they form one complex sentence.
复杂句是由一个独立的句子加一个从句构成的。)
China is a country that its history is very long.
China is a country. (独立句子)
That its history is very long (从句)
IV. 复杂句+复合句（Compound sentence+ Complex sentence）
Studying English is important because a lot of jobs need
people know English; moreover, learning English helps
people understand other coun