[中文这样说]

我是家里的独生子,我没有兄弟.

【英文对比翻译】

Chinese Style I am the only son in the family. I have not brothers.

American Style I am the only son in the family. I have no brothers.

Not与助动词和情态动词连用构成否定式而have在英语此处为行为动词,不能和not连用. No与可数名词单数,复数或不可数名词连用,意思是没有