they need hundreds of hours of study and practic里面 的语法结构是什么?

they need hundreds of hours of study and practic里面 的语法结构是什么? They need hundreds of hours of study and practice. they need hundreds of hours of study and practice,能改为they ne they need hundreds of hours of study and practice,这句话可以改为 They need hundreds of hour of study and practice 那你帮我分析下they study English need hundreds of hours.我自己编的 They need hunderds of hours of study and practice the langua hundreds of hours of 怎么连读? hundreds of的用法 hundreds和hundreds of 的用法 hundreds of和 hundreds的用法 关于hundreds of的句子