其后接 that 从句,通常要用虚拟语气 (should+v. ):
He advised that we (should) leave early. 
他建议我们早点出发。
We advised that he should leave early. 
我们建议他早点出发。 
He advised that everyone should buy one. 
他建议每人买一个。
注意:
后接动名词 (不能直接跟不定式)或不定式的复合结构:
He advised leaving early. 
他建议早点出发。
He advised us to leave early. 
他建议我们早点出发。