高二英语Unit17Disabilities总复习教案
1. Talk about disability? 谈一谈残疾 (p. 49 Goal 1)
* disability和inability
▲ dis-和in-都是表示否定意义的前缀，但用在ability前，表示不同的意思，disability意为“残疾”，而inability意为“无能力”“没办法”。请比较下列例句，注意这两个词的不同意思。① I was surprised at her inability to do things promptly. 她不能迅速处事，我感到惊异。② She is deaf，but refuses to let her disability prevent her from doing what she wants to do. 她失聪，但她不让自己的残疾妨碍自己去做想做的事。③ His inability to pay his debts made his parents worried. 他无力偿还债务使他父母亲很着急。④ Her lack of experience is a severe disability. 她缺少经验是一个严重的障碍。
【注】ability的形容词是able，其前也有两个否定前缀，dis-和an-表示不同的意思，disable是动词，意为“使……伤残”，而unable则是形容词，表示“不能的”“不会的”。如：① That illness disabled him and left him unable to work. 那病使他残疾，不能工作。② An accident disabled him from teaching. 一次交通事故使他再也不能教书了。③ He seems unable to understand the simplest instructions. 他看来似乎连最简单的说明也不懂。④ He was unable to sleep at night because of his anxiety. 他因焦虑而晚上睡不着。

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