proper
单词辨析：
指对某人来说很方便的，能省时省力省事的。
Will it be convenient for you to come this afternoon?
你今天下午来方便吗？
You'll find it very convenient to pay by credit card.
你会发现用信用卡付款非常便利。
We must arrange a convenient time and place for the seminar.
我们必须为这次研讨会安排一个合适的时间和地点。
指适合某一时间、情况、目的等的，常后接介词 for/to。
The situation is not appropriate for an attack.
形势不适合进攻。
We want an education system that is more appropriate to the needs of the students.
我们希望有一种更切合学生需求的教育制度。
It is appropriate to let him do the job.
让他来做这份工作是合适的。
指正确而恰当的，侧重于符合某种标准或习惯，用于此义时只作定语。
Make sure that everything is in its proper place.
务必把每样东西都放在恰当的位置。
She wore proper clothes for the party.
她穿着适合聚会的服装。
You have to know the proper way to clean your teeth.
你必须知道刷牙的正确方法。
相关例句：
Two out of five people lack a proper job
每五人中有两人没有正当的工作。
There were no proper toilets, but only an outdoor latrine
没有正规的厕所，只有一个位于室外的茅坑。
He helped to put things in their proper place.
他帮忙把东西放置妥当。
This formulation is not proper.
这种提法不妥。
I'm afraid this isn't the proper way to handle the case.
这样处理，恐怕不妥。
A distinction must be made between archaeology proper and science-based archaeology.
必须区分考古学本身和以科学为基础的考古学。