doing共0篇 enough to do和doing的区别enough to do和doing不能进行比较,因为enough后面不能加doing,... study to do还是study doing都可以,具体看实际语意。study to do和study doing的用法都是正... have great fun to do还是doinghave great fun doing sth。这里省略了in,正确的表达是have fun... have problem doing还是problems英语中常用短语have+problems+doing来表示做某事有困难,而不是用... heard to do 和heard doing 有什么区别指代不同、用法不同、侧重点不同。heard sb do:听某人说;heard... 上一页 下一页