2010届高考一轮复习 Units2--3教学案

人教版新课标 必修四

一. 教学内容：

　　一轮知识点Module 4 Unit 2 &3

二. 重点单词：

　1. reduce vt.减少，缩减

　　The price of these shoes has been reduced since the New Year's Day.

　　The new bridge reduces the traveling time from 50 minutes to 15 minutes.

　　reduce to减少到，使......变为（更小尺寸）

　　reduce by减少了，（以......的比例）减少

　　拓展：

　　reduction n.缩减，减少，降低

　　make a reduction打折扣

　　at a reduction of打了......的折扣

　　考点例题：

　　We can _________________ in price of the hat for you because we are now making a reduction.

　2. certain adj.确定的；某一个

　　She is certain to do well in the examination.

　　It's about certain that the government will lose the next election.

　　A certain person called on my yesterday.

　　拓展：

　　for certain 肯定地；确凿地（certainty n.）

　　make certain of把......弄清楚

　　make certain that＋从句 把......弄清楚

　　注：certainty n.确实的事情

　　with certainty肯定地

　3. suitable adj.合适的；适合的（suit v.）

　　They are looking for a suitable person to take over Mr Brown's job.

　　The film is not suitable for children -it's full of violence.

　　拓展：辨析：suit与fit

　　fit 指大小、形状的合适，引申为吻合、协调。suit 指合乎需要、口味、条件、地位，以及花色、款式等与某人的皮肤、气质、身材或身份相称。match 多指大小、色调、形状、性质等的搭配。

　　（1）It doesn't ________ you to have your hair cut short.

　　（2）Carpets should ________ the curtains.

　　（3）Does the coat ________ you?

　4. astonish vt.使惊讶

　　What he said at the meeting astonished everyone present.

　　拓展：

　　（1）多用过去分词作表语和定语，表示"感到惊讶的"，如：

　　I am astonished that he didn't pass the exam.

　　（2）其另一形容词astonishing 表示"令人惊讶的，惊人的"，如：

It is astonishing to me that he should be present.