大部分草已被观众踏平了。

　　[名师点津]　

　　当wear及wear out 用来描述衣服或鞋子的固有性质或特征时，一般用主动形式表示被动含义。

　　[图形助记]　

　　 reasonable adj.合理的，有理由的；公道的；明智的

　　(教材P25)He made some quite reasonable points and gave a superb speech.

　　 他做了一些非常合理的解释并做了极好的演讲。

　　(1)a reasonable explanation/excuse　合理的解释/ 借口

　　It is reasonable to do sth. 有理由做某事

　　(2)reasonably adv. 合理地；明智地；

　　 尚可

　　(3)reason n. 原因，理由

　　　 v. 判断；推断

　　①It seems reasonable to assume they've been tested.

　　似乎有理由认为它们都已经通过测试。

　　②Developing the ability to evaluate reasonably(reason) and independently about health problems will serve you well throughout your life.

　　培养合理、独立的健康问题的评价能力将有助于你的整个生活。

　　③It is reasonable(reason) to assume that he knew beforehand that this would happen.

有理由认为他事先就知道会发生这样的事。