look forward to和look forward to doing的区别

look forward to和look forward to doing的区别 look forward to doing sth和look forward to do sth的区别? 还是不懂,look forward to do和 look forward to doing用法的区别 look forward to doing. expect 和 look forward to的区别 look forward to和hope的区别 look forward to doing和looking forward to do 急求look forward 与look forward to 的区别 look forward to (doing )sth look forward to (doing) sth. look forward to doing 和 hope to do 的语境区别 pay attention to doing和look forward to doing造句