(教材P6)In some cases，different parts of speech (usually a noun and a verb) have the same spelling but different meanings.在某些情况下，不同的词性(通常是名词和动词)拼写相同但含义不同。

　　in any case 无论如何，总之

　　in case 假使；免得；以防(万一)

　　in case of 假使；万一

　　in this/that case 假使这样/那样的话

　　in no case 决不(置于句首，引起倒装)

　　as is often the case 通常就是这样；这是常有的事

　　①There's no point complaining now－we're leaving tomorrow in any case.

　　现在抱怨毫无意义，不管怎样我们明天都要离开。

　　②It was considerate of Michael to inform us of his delay in case we got worried.

　　迈克尔很体贴，他通知我们他的延误以免我们担心。

　　③In no case are you to leave your post.

　　你决不能离开你的岗位。

　　 reduce vt.& vi.减少

　　(教材P9)The possibility that pleasant smells might reduce pain has recently been suggested by new research.最近新的研究表明令人愉快的气味可能会减轻疼痛。

　　(1)reduce to 降低到/下降到......

　　reduce by 减少了......

　　be reduced to... 沦落为......；迫使......

　　(2)reduction n. 减少

　　①He was reduced to begging all day after he was fired by his boss.

　　在被他的老板开除以后，他沦落到整天乞讨的地步。

　　②She reduced her weight by five kilograms.

　　她把体重减轻了5千克。

　　③Your speed must be reduced to the city speed as soon as you cross the border.

你一进市区车速就得减到市区的规定速度。