grave和serious的区别：含义不同、用法不同、词性不同。grave可作名词、动词、副词和形容词，含义为“去世”、“重大的”、“庄严的”、“抑音符”、“铭记”、“刻”、“极慢地”；serious只作形容词，含义为“不好的”、“有危险的”、“严肃的”。
一、grave的中文含义及用法介绍
grave可作名词、动词、副词和形容词，意为去世;逝世；严峻的;深切的;沉音符;抑音符；雕刻;铭记；铭记；庄重地;极慢地。
例句：He followed her to the grave.
他紧跟着她离开了人世。
The consequences will be very grave if nothing is done.
如果不采取任何措施后果将会是非常严重的。
He looked very grave as he entered the room.
他进屋时表情非常严肃。
His words were graven on my mind.
他的话铭记在我的心头。
Vacuum brazed diamond graver is used to grave all kinds of stones.
钎焊雕刻刀用于雕刻各种石头。
Anxiously, she examined his unusually grave face.
她忐忑不安地审视着他异常严肃的脸色。
Incidents of the gravest nature will now be staged one after another.
最重大的事变，将在今后逐步演出。
The consequences will be very grave if nothing is done.
如果不采取任何措施后果将会是非常严重的。
二、serious的中文含义及用法介绍
serious作为形容词，意为不好的;严重的;有危险的;需认真思考的;严肃的;重要的;须重视的。
例句：They pose a serious threat to security.
他们对安全构成严重威胁。
It's time to give serious consideration to this matter.
到了认真考虑这一问题的时候了。
We need to get down to the serious business of working out costs.
我们该认真地把成本算出来了。
Be serious for a moment; this is important.
严肃点儿，这件事很重要。
Don't laugh, it's a serious suggestion.
别笑，这是一条严肃的建议。
