在英语表达中，动词“suggest”后接宾语从句或动名词短语是常见的用法，但关于“suggest sb to do”和“suggest doing”的区分，许多同学感到困惑。
一、suggest sb to do还是doing?
是suggest sb doing
在英语中，当我们说“建议某人做某事”时，我们并不使用“suggest sb to do”这一结构，这种用法是不对的。相反，我们更倾向于使用“suggest (that) sb should do”或者“suggest sb's doing”这两种形式。
这是因为“suggest”作为一个动词，其后接宾语从句时，宾语从句中的动词应使用虚拟语气，即“should + 动词原形”，其中“should”可以省略。同时，“suggest”后也可以直接接动名词短语作为宾语。
例句：
She suggested (that) I should go to the doctor.她建议我应该去看医生。
He suggested my taking a break.他建议我休息一下。
二、suggest sb to do sth和doing的区别
在实际应用中，“suggest sb to do sth”这一结构并不符合英语语法规则，因为“suggest”后并不直接跟带“to”的不定式作为宾语。相反，“suggest sb's doing sth”或“suggest (that) sb should do sth”是更为正确的表达方式。
“suggest sb's doing sth”和“suggest (that) sb should do sth”的区别
1.从语法结构来看，“suggest sb's doing sth”中，“doing”作为动名词短语，是“suggest”的宾语，而“sb”则是动名词短语的逻辑主语，表示建议的对象。
而“suggest (that) sb should do sth”中，宾语从句使用了虚拟语气，强调了建议的虚拟性或建议的内容。
例句：
His teacher suggested his joining the math club. 他的老师建议他加入数学俱乐部。
She suggested (that) he should start his own business. 她建议他应该开始自己的事业。
2.从含义上看，“suggest sb's doing sth”通常表示一种建议的状态或结果，即建议某人正在做某事或已经做了某事。而“suggest (that) sb should do sth”则更强调建议的内容，即建议某人应该做某事。
例句：The report suggests the company's increasing its investment in technology. 报告建议公司增加对技术的投资。
The doctor suggested (that) I should eat more vegetables and less meat. 医生建议我应该多吃蔬菜，少吃肉。
总之，在英语中，“suggest”后接宾语从句时应使用虚拟语气，即“(that) sb should do sth”，而接动名词短语时则直接使用“sb's doing sth”。