S主词 Vi不及物动词 Vt及物动词 SC主词补语

O受词 OC受词补语 IO间接受词 DO直接受词

S + Vi + SC

David is my younger brother. David是我的弟弟。

He is a smart boy. 他是个聪明的孩子。

My father is a math teacher. 我父亲是数学老师。

John and Mary are in love. John跟Mary谈恋爱了。

He often complains about his low salary. 他常常抱怨薪水太低。

I'm afraid of cockroaches. 我怕蟑螂。

The problem is that I don't know him. 问题是我不认识他。

I'm sure he doesn't like cheese. 我确定他不喜欢起司。

She is always quick to react. 她一向反应很快。

It's sure to rain. 一定会下雨。

Don't be afraid to ask questions. 别怕问问题。