Tasty專指味覺，delicious還可以包含視覺和嗅覺，所以適用的範圍比 tasty 稍微廣些...delicious surprise, a delicious joke, her delicious new dress。這些時候你不能用 tasty。 另外如果你只「看到」一盤好吃的食物，應該說: It looks delicious...
比"什麼"較好吃是 more tasty than. 比較好吃是 more tasty. 比甚莫較好吃很多是 much more tasty.
I drink tasty coffee in a mug,looking forward to encounter with you again I use a mug...see(meet) you again. OR I am using a mug to drink the tasty coffee,and I am looking forward to see(meet) you again. (if you...