1.Leisure and events and areas that address these phenomena,including play,recreation,the arts,sport,festivals,celebrations,health and fitness,outdoor recreation,parks,entertainment and tourism,are important aspects of modern life and providing for these is an increasing significant feature in modern economies.（有provide for sth这种使用方法吗？）
2.The law also provided beginning in 1971 federal employees would be granted three-day weekends.
3.The IHR provide for cooperation between WHO and other competent intergovernmental organizations or international bodies in the implementation of the Regulations. （provide表示规定的时候，是既能够加for 又可以不加吗？）
1. and providing for these is an increasing significant feature in modern economies.
【答】provide 可以用作不及物动词。provide for sth. ：提供某物。
本句 providing for these 是动名词，作句子主语。
2. The law also provided beginning in 1971 federal employees would be granted three-day weekends.
【答】本句provided 意为“规定”，后接that从句（被省略）。
provide 可以表示法律、规章、协议等的“规定”, 总是作为条件提出使之能根据某人的意愿或某种规则履行, 后常接that引起的从句，可用陈述语气，也可用虚拟语气。
3.The IHR provide for cooperation between WHO and other competent intergovernmental organizations or international bodies in the implementation of the Regulations.
【答】本句provide 是谓语动词。使用方法跟句1相同，仍然是不及物动词，跟for 连用。provide for cooperation 不是“规定合作”，而是“提供合作”。
