practice doing 为什么practice的后面要跟doing 而不跟do 或者 to do

practice doing 为什么practice的后面要跟doing 而不跟do 或者 to do practice in doing 和practice doing 区别 英语词组“练习发音”为什么不能用“practice pronouncing”而用“practice pronunciation”因为——“practice doing ”不是? practice doing sth造句 practice doing sth造句 practice doing&to doRT practice doing(do) something? 用practice doing sth造句 用practice doing sth.造句 practice to do 还是doing? 在英语语法中,为什么有的词要接动词ing形式如practice doing sth和finish doing sth practice doing sth.和practice to do sth.的区别 practise doing sth.可以换成 practice吗 enjoy mind spend practice+doing区别 practice in doing sth 的近义词 有practice doing sth这个短语吗 在一个例句中看到了devotes all he free free time to practice.为什么不是to doing呢 sb practice doing sth sb enjoy doing sth造句sb practice doing sthsb enjoy doing sth造句