2019-2020学年度人教版必修五Unit1Great scientists Period2Language points学案

一、重点单词用法精解

1. characteristic n. 特征，特性

The chief characteristic of human being is that they can think. 人类主要的特征是他们会思考。

2. expose vt. 暴露，揭发，曝光（摄影）

Don't expose the baby to the burning sun. 切勿将小孩曝晒。

注：expose sb/sth to...中的to为介词。

3. defeat vt. & n. 击败；战胜；

The army defeated the enemy in the end. 军队最终战胜了敌军。

Tom suffered the defeat in the English examination. 汤姆英语考试失败了。

辨析：win的宾语是game, prize等物（不是人）；beat和defeat的宾语是人；hit"打一下"； beat"（连续地）打"；strike "重击"。

4. cure vt. & n. 治愈，治疗法

There is no known cure for AIDS. 还无治疗艾滋病之法。

It is possible to cure the sickness. 治愈这种疾病还是可能的。