unit1 Madame Curie教学目标

　　(2)doubt 名词/代词。e．g.

　　　I doubt his honesty.我对他的诚实表示怀疑。

　　(3)doubt v．-ing form。e.g.

　　　We ever doubted being able to finish the work in time．我们曾经对能否及时完成这工作怀疑过。

　　(4)doubt of-phrase。e．g.

　　　They have never doubted of success．他们从未对取得成功有什么怀疑。

　　如果要表示"对……没有怀疑/疑虑"，则用句型There is no doubt about sth．/as to sth./that-clause。

　　①There is no doubt about the truth of the news．=There is no doubt as to the troth Of the news．消息的真实性无可怀疑。

　　②There is no doubt that the news is true．=No doubt that the news is true. 消息无疑是真实的。

教学建议Lesson 2

教学建议

Lesson 2词语辨析：

　　2．There was a certain mineral which was even more radioactive than uranium.

　　此句中的certain 是形容词，做定语，意思是"某，某一，某种，一定的"，用来表达：

　　(1)不具体指明的某个，某些，或 知而不说的某事物，后接名词单复数形式均可。e.g.

　　① Water can be changed into ice or steam under certain conditions.水在一定的条件下可以变成冰或蒸汽。

　　②.He didn't come for a certain reason.由于某种原因，他没来。