外研版高一必修四module-3教案、语言点、练习 - 图文(2)

vary with. . .随……而变化 vary from. . .不同于……

搭配 vary in.在……方面有差异

vary between.. .and. .由……到……情况不等 vary from. . .to. . .由……到……情况不等

Prices vary with the season.物价随季节而变化。

The weather varied from very cold to quite warm.天气从非常寒冷变得相当暖和。 Class numbers vary between 25 and 30.班级学生的数目从25到30不等。 The climate always varies from area to area.地区与地区之间气候总是不同。 These flowers vary in color and size.这些花朵色彩和大小各异。

【单词积累】varied adj.各种各样的 variety n..变化；多样性various adj.不同的；各种各样的 【拓展】a variety of = varieties of各种各样的 [典例剖析]

(2012．山西运城模拟)It is obvious that hopes, goals, fear and desires _______ widely between men and women, between the rich and the poor.

A. shift B. alter C. vary D. transfer 4. on guard （保持）警惕；值班

搭配: be on (one‘s) guard against. ..提防…

Who was on guard when the fire broke out:火灾发生时是谁在执勤？ Two men are on guard at the door.两个人在门口站岗。

Let‘s be on our guard against thieves.我们大家都要提防小偷。 学法点拨：―on+n．‖表示某种状态：

on holiday在度假 on fire着火 on business因公 on show在展出 on duty值班 on sale出售 on strike在罢工 on leave休假

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[典例剖析]The soldiers there were warned to be _______ against a sudden night attack. A. on duty B. on watch C. On guard D. off guard 5. formal adj．正式的

The dinner was a formal affair.这是正式宴会。

Her dress was too showy for such a formal occasion.在这么正式的场合她穿的衣服有点太花哨了。

知识拓展informal adj.非正式的

Though this is an informal call, he wears a format dress. The president will pay an informal visit to that country. 6. gesture n. [C，U]姿势，手势，姿态vi.做手势 They communicated entirely by gestures. She made an angry gesture.

He stood up and gestured to the waitress for some more tea.他站起来向女服务员做手势，要她再 送些茶来。 即学即用

That _______ means that he wants us to come to him.

A．structure B．feature C．activity D．gesture 7. threatening adj .恐吓的，威胁的 threaten to do sth.威胁要做某事

He wrote me a threatening letter, which made me very worried. He received a threatening letter.

His threatening words frightened the little boy.

【单词积累】threaten v．威胁，恐吓；危及 threat n.[C，U]威胁，恐吓；前兆，征兆 Tom‘s father threatened to beat him if he stole again. He threatened to make the photo public.

There is a real threat of war.确有战争的征兆。 误区警示：threaten后常接动词不定式结构。

学法点拨：threaten是threat加后缀-en构成的动词。-en作为后缀，可以接在某些形容词或名词后面构成动词，有―使‖―成为‖―使……变成‖等含义。

shorten(使缩短) darken(使变黑，变黑) deepen(加深)

broaden(加宽) sharpen（削尖） sweeten（使变甜） richen(使富裕) thicken(使变厚) quicken(加快)

soften(使软化) blacken（使变黑） harden(变硬，硬化) weaken(变弱) widen(加宽) strengthen（加强） 【典例剖析】（2009，上海高考）David threatened _______ his neighbour to the police if the damages were not paid.

A. to be reported B．reporting C．to report D. having reported 8. make/do a deal (with)…（和……）达成协议，（与……）做交易 We made a deal with the manager on overtime. Did you make a deal with that company last week?

The two teams made d deal and Robson was traded.两队达成了罗伯森转会的协议。 He was trying to make a deal with them.他正设法和他们达成一项协议。 【链接】

have a deal with. .与……做一笔交易 a great/good deal of很多 It‘s/That‘s a deal. 成交，就这么办／一言为定 deal with处理（与how连用）；解决，对付，与……打交道；涉及 do with处理（与what连用） deal in从事；经营，做……买卖 a great deal大量，

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