ask, beg, demand, require, request, implore, claim, pray, entreat 这些动词均有"要求，请求"之意。
ask : 最普通用词，指向对方提出要求或请求，长、晚辈，上下级之间都可使用。
【英释】If you ask someone to do something, you tell them that you want them to do it.
【例句】 We had to ask him to leave.
我们不得不要求他离开。
beg : 指恳切地或再三地请求或要求，常含低三下四意味，也多用于应酬场合。
【英释】If you beg someone to do something, you ask them very anxiously or eagerly to do it.
【例句】 I begged him to come back to England with me.
我恳求他和我一起回英格兰。
demand : 一般指理直气壮地提出强烈要求，或坚持不让对方拒绝的要求。
【英释】If you demand something such as information or action, you ask for it in a very forceful way.
【例句】Mr Byers last night demanded an immediate explanation from the Education Secretary.
昨晚拜尔斯先生要求教育大臣立刻作出解释。
require : 强调根据事业、需要或纪律、法律等而提出的要求。
【英释】If a law or rule requires you to do something, you have to do it.
【例句】The rules also require employers to provide safety training.
这些规定还要求雇主提供安全培训。
request : 正式用词，指非常正式，有礼貌的请求或恳求，多含担心因种种原因对方不能答应的意味。
【英释】If you request something, you ask for it politely or formally.
【例句】 Mr Dennis said he had requested access to a telephone.
丹尼斯先生说他已经请求使用电话。
词老大
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