pleasant， pleased和pleasure都有“高兴（的），愉快（的）”的意思，但是具体的用法却有所区别。下面为同学们归纳它们的常见用法，带领大家走进“快乐”大本营吧！
　　1. pleasant作定语时，意为“令人高兴的，令人愉快的”，只能修饰事物，不能修饰人；作表语时，意为“使人感到高兴（愉快）”，句子的主语只能是表示事物的词语。例如：
　　It is a pleasant night. 那是个令人愉快的夜晚。
　　It is very pleasant to sit down after standing for hours. 站了几小时后坐下来很舒服。
　　2. pleased通常用作表语，意为“高兴的，欣喜的，满意的”，其主语一定是人。常见结构有be pleased at doing sth.， be pleased with sth.， be pleased to do sth.， be pleased that从句。例如：
　　He must be pleased at this news.
　　他听到这个消息一定高兴。
　　The teacher is very pleased with our homework.
　　老师对我们的作业很满意。
　　The two friends were very pleased to see each other again.
　　这两个朋友非常高兴能再次见面。
　　I was pleased that the manager had decided not to be angry with me.
　　使我高兴的是经理决定不再生我的气了。
　　3. pleasure是名词，表示“愉快，高兴；满意；喜欢”之意，多用于口语，当你帮助他人受到对方感谢，你应说：It’s a pleasure.或It’s one’s pleasure.。当别人请你帮忙，你乐意帮忙时，则应说：With pleasure.。例如：
　　—Thank you for your help. 感谢你的帮助。
　　—It’s a pleasure. 不用谢。
　　—Can you tell me how to use this computer？ 你能告诉我怎样使用这台电脑吗？
　　—With pleasure. 很乐意。
　　【牛刀小试】
　　（ ）1. It gives me great ______ to welcome our speaker.
　　A. please B. pleasant C. pleased D. pleasure
　　（ ）2. They often remember the ______ days they had with you.
　　A. pleasant B. please C. pleasure D. pleased
　　（ ）3. I’m ______ with the way things have been going.
　　A. please B. pleased C. pleasant D. pleasure
　　（ ）4. He mixed business and ______ in a perfect way.
　　A. pleasant B. pleased C. pleasure D. pleasant
　　（ ）5. I think Jim must be very ______ to have a ______ trip.
　　A. please； pleasant B. pleased； pleasant
　　C. pleasure； pleasant D. pleasant； pleased
　　[Keys： 1～5 DABCB]