They need hundreds of hour of study and practice请问这句中的of 可以改用to 为什么要用of ,of 与to 在这里有什么区别?

they need hundreds of hours of study and practice,能改为they need hundreds of hours to study andpractice吗 they need hundreds of hours of study and practice,这句话可以改为they need hundreds of hours to study and practice They need hundreds of hours of study and practice.第二个 of they need hundreds of hours of study and practic里面 的语法结构是什么?they 是主语 ,need是谓语,study and practic是宾语.hundreds of hours 如果不对请说出正确的语法结构. 那你帮我分析下they study English need hundreds of hours.我自己编的 They They need light they drop in hundreds of store翻译 hundreds they do studies in (m )for animals.they (o )on animals when they need to.括号里填写单词 they need the (long) sleeping time.long用什么形式,急.o(>_ children have an apple or a banana toeat at break.They are growing,they need to eat o首字母填空 What do they need? They have learned about ______ in recent years.选项:a、several hundreds English words b、hundreds They need hundreds of hour of study and practice请问这句中的of 可以改用to 为什么要用of ,of 与to 在这里有什么区别? 英语翻译Volunteering is of tremendous benefits to both those in need and society.Take the Wenchuan Earthquake as an example,hundreds of thousands of volunteers play an active role in Wenchuan quake-hit areas.And they contribute daily necessaries, They agree it may take hundreds of years. they agree it may take hundreds of years汉译 What are they?They are____young trees.D.hundreds of B.two hundreds C.hundred of C.hundred of