名词性从句及不定式、动名词作主语时，谓语动词一般用单数形式。【例如】To finish the work in advance is what he wants.Smoking cigarettes is dangerous to your healthWhat seems easy in theory is difficult in practice.What caused the accident is a complete mystery.但是，what引导名词从句作主语时，其表语是复数形式时，系动词也可以是复数形式。【例如】What we badly need here are qualified teachers.
工作类flow of personnel 人才流动mechanism of personnel flow人才流动机制survival of the fittest 适者生存a sense of accomplishment 成就感company philosophy 企业文化team-work spirit 团队合作精神a fat salary 收入颇丰a harmonious interpersonal relationship 和谐的人际关系</p 产品：澳博培训供货总量：不限产品价格：议定包装规格：不限物流说明：货运及物流交货说明：按订单
