wonderful 指的是美妙;極好的，精彩的，絕妙的。
pleasant 指的是令人愉快的;可愛的;有趣的;晴朗的。
wonderful 比 pleasant 感情更充沛，喜歡之情更強烈。
例句辨析：
wonderful
1、The cold, misty air felt wonderful on his face.
霧蒙蒙的寒冷空氣使他臉上感覺很舒爽。
2、It's wonderful to see you.
見到妳真好。
3、I've always thought he was a wonderful actor.
我壹直認為他是個出色的演員。
4、She grew many wonderful plants that were unfamiliar to me.
她種了很多我不熟悉的奇妙植物。
pleasant
1、I've got a pleasant little apartment.
我有壹套舒適的小公寓。
2、The woman had a pleasant face.
這位女士面相和善。
3、It's always pleasant to do what you're good at doing.
做自己擅長的事總是令人愉快的。
4、Lloyd George was most anxious to be agreeable and pleasant.
勞埃德·喬治極力想表現得平易近人、和藹親切。