必修5 Unit1 Great scientistsPart 1. Warming up1. explain 及物动词（vt.）解释;说明;阐明(+to)+wh-+(that)He explained that he had been cheated. 他解释说他是上当受骗了。Can you explain how the machine operates?你能解释一下这机器是如何运转的吗?Please explain this rule to me.请给我讲解一下这条规则。不及物动词（vi.）解释;说明;辩解Ive got to explain about it. 我得解释一下此事。2. characteristic n. 特征；特性 Kindness is one of his characteristics. adj. 独特的 I heard my friends characteristic laugh. be characteristic of sb./sth. 是.
