一、主谓句
Swim - 主语：隐含的主语（如 I）
- 谓语：动词原形
- 补充说明：省略主语的祈使句
I swim in the river
- 主语：I
- 谓语：swim
- 宾语：in the river
She likes dancing
- 主语：She
- 谓语：likes
- 宾语：dancing
二、主谓宾结构
He gave me a gift
- 主语：He
- 谓语：gave
- 直接宾语：a gift
- 间接宾语：me
My mother bought me a bike
- 主语：My mother
- 谓语：bought
- 直接宾语：a bike
- 间接宾语：me
三、主谓宾宾补结构
I want him to go home
- 主语：I
- 谓语：want
- 宾语：him
- 宾补：to go home
The boy makes his mother laugh
- 主语：The boy
- 谓语：makes
- 宾语：his mother
- 宾补：laugh
四、主谓系表结构
The sun rises
- 主语：The sun
- 谓语：rises
- 表语：（隐含）in the east
She is a talented musician
- 主语：She
- 谓语：is
- 表语：a talented musician
五、特殊句型
It's essential to protect the environment
- 主语：it
- 系动词：is
- 表语：essential
- 后置定语：to protect the environment
六、补充说明
系动词（如be, seem, become）后接表语，表语可以是名词、形容词或分词。
双宾语结构： 如 He gave her a gift
省略句：如 Swim省略了主语 I，属于祈使句。
以上句子均符合英语简单句的基本结构，涵盖主谓、主谓宾、主谓宾宾补、主谓系表等常见类型。
