| 简单句 | 并列句(逗号可选) |
|---|---|
| I knocked at the door. He did not open it. | I knocked at the door, but he did not open it. |
| He must be mad.He must be very wise. | He must be either mad or very wise. |
| My sister went shopping. I went shopping. | Both my sister and I went shopping. |
| We got very tired.We got very hungry. | We got not only very tired but very hungry as well. |
| It was three o' clock.We could not get lunch.We had a cup of coffee. | It was three o' clock, and we could not get lunch, so we had a cup of coffee. |
| I wash my face.I brush my teeth.I comb my hair every morning. | I wash my face, brush my teeth, and comb my hair every morning.(严格语法中最后的,and的逗号不能省略~) |