五种句型：1. 主+ 系+ 表We are students.

2. 主语+动词（不及物）We work.

3. 主语+动词（及物）+宾语He plays the piano.

4.主语+动词（及物）+直接宾语+间接宾语She gave me a pen.

5. 主语+动词（及物）+宾语+宾语补足语

He made the boy laugh. We call him Jack We elected him chairman.