joyful,pleasant和happy的区别？

意思都含“快乐的”、“高兴的”。

happy 是常用词, 本义是“幸福的”, 指“由于幸福、满足而感到快乐”, 如:
He was very happy to hear that .
听到那, 他很快乐。

joyful指“一种外来事件使情绪强烈、起劲、愉快的”, 如:
They were singing and dancing to celebrate this joyful occasion.
他们唱着、跳着庆祝这令人欢乐的时刻。

pleasant 是常用词, 指“愉快的”, 强调“所形容的人或物有给予愉快的性质”, 如:
We spent a very pleasant evening.
我们度过了一个愉快的夜晚。

----Will

happy 是常用词, 本义是“幸福的”, 指“由于幸福、满足而感到快乐”, 如:
He was very happy to hear that .
听到那, 他很快乐。

joyful指“一种外来事件使情绪强烈、起劲、愉快的”, 如:
They were singing and dancing to celebrate this joyful occasion.
他们唱着、跳着庆祝这令人欢乐的时刻。

pleasant 是常用词, 指“愉快的”, 强调“所形容的人或物有给予愉快的性质”, 如:
We spent a very pleasant evening.
我们度过了一个愉快的夜晚。

人家复制了你又有什么办法呢？坚决打击盗版和机器翻译行为！！！