(3)The chemistry teacher is pleased with my grades．化学老师对我的成绩很满意。

　　思考： (1)pleasant意为___________ ，反义词是_____________

　　(2)pleased，pleasant与please有什么区别?pleased是______词，

　　意为"__________________________"，在句中常用作表语，常构成短_____________________________(对某人)满意。 pleasant也是________词，表示"___________-"，形容事物本身的性质，一般用作______语，如主语是

　　物，也可以用作_______语。

　　2．by accident Did you know that tea，the most popular drink in

　　the world(after water)，was invented by accident? 你知道茶这种世界上最受欢迎的饮料(在水之后)是偶然被发明的吗?

　　思考：by accident意为： _____________ ，同义词组是______________

　　3．discover v.发现(出乎意料地)；发觉

　　(1)Cook discovered Hawaii on a hot day．库克在一个大热天发现了夏威夷。 (2)A 4-year-old girl invented a new kind of toy ．一个4岁的女孩发明了一种新玩具。

　　(3)Please find out who broke my window．请查明谁打破了我的窗户。

　　【学法引领】完成一个任务：

　　　　 ask some students to read the article and answer the questions.　

　　Who invented tea?

　　1. What is this article about?

　　It's about how tea was invented.

　　2. When was it invented?

　　It was invented over 3,000 years ago.

　　3. Who was it invented by?

　　It was invented by the emperor Shen Nong.

4. How was it invented?