人教版高中英语必修二(Book 2 Unit 4)

人教版高中英语必修二（Book 2 Unit 4)

Unit 4 Wildlife protection 核心单词

1. decrease v. 减少；（使）变小；变少n. 减少；降低；减少的数量，其后常接介词in/of 联想拓展

decrease (sth.) to/by ... 减少到/了……

increase vi.&vt. 增加；增长；增强 n.增加；增加的数量 increase to/by ...增加到/了…… on the decrease/increase 在减少/增加 易混辨析reduce/decrease

reduce 强调在\数量、大小，程度或强度\方面下降或减少。 decrease 侧重强调\稳定地，逐渐地，不断地\减少。

They are making every effort to decrease the production cost. 他们正在尽力降低生产成本。

The membership decreased to 150.会员数减少到了150人。

The number of students in the class has decreased by 20.班级里的人数减少了20人。

There has been a decrease in our imports.我们的进口数量减少了。 高手过招 完成句子

①这些措施将有助于降低生产成本。

___________will help ____________the cost of production. ②人口出生率正在下降。 The birthrate is ___________.

答案：①These measures; decrease ②on the decrease 2. suggest vt. 建议；提出（意见、计划、理论等）；暗示；表明 常用结构：

suggest+doing 建议做……

suggest sb./sb.'s doing sth. 建议某人做某事（不说suggest sb. to do sth.）

suggest sth. to sb. 向某人提议…… （不能说suggest sb. sth.）

suggest (to sb.)+that从句(向某人)建议。（所接从句用虚拟语气：sb.+should+动词原形，should可以省略） It is suggested that ... 建议是…… suggest sth. 暗示；表明……

suggest+that从句 暗示；表明……（从句用陈述语气） suggest sth. to sb. 使某人想起……

I suggest doing it in another way.我建议换一种方式做这件事。 They suggested another shop to us.他们向我们建议了另一家商店。 She suggested that we（should）have lunch at the new restaurant.她建议我们在那家新开的餐馆吃午餐。

Her expression suggested that she had told a lie.她的表情表明她撒了谎。 温馨提示

suggestion, advice, proposal作\建议\讲时，相关的名词性从句要用虚拟语气。

My suggestion is that we (should) go to the cinema together.我建议我们一块儿去看电影。(表语从句)

It's suggested that you (should) stay here for another week.建议你在这儿再待一个星期。(主语从句)

He gave me an suggestion that I should go to Shanghai for a holiday.他建议我去上海旅游。(同位语从句) 单项填空

His suggestion ___________to see the art exhibition interested everyone of us.

A. that we go B. which we should go C. that we would go D. we should go

解析：选A。不管是suggest的何种形式，在句子中有\建议\之意时，后接的从句必须用虚拟语气。

3. affect vt. 影响；侵袭；相当于；使感动；激起（悲伤、愤怒、爱等情绪） 易混辨析affect/effect/influence

affect vt.表示\影响，（病）侵袭\，多指不好的影响。当affect的宾语是人时，它表示引起心智或感情上的影响，即\使……感动\。

effect 表示\影响\时，是名词，指由于某种原因直接产生的结果，常用短语为：have an effect on对……有影响；in effect正在实行；实际上；side effect副作用；take effect开始实行；开始生效；without effect没有效果；come