高中英语必修二Unit4知识点

《高中英语必修二Unit4知识点》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、Unit4Wildlifeprotection【短语归纳】：1.dieout灭亡；逐渐消失2.inpeace和平地；和睦地；安祥地3.indanger(of)在危险中；垂危4.inrelief如释重负；松了口气5.burstintolaughter突然笑起来；大声笑了出来6.protect...from保护……不受……(危害)7.payattentionto注意8.comeintobeing形成；产生9.accordingto按照；根据……所说10.sothat以致于；结果【知识点总结】：1.Theirnumbersmaydecrease.decreasevi.&vt.减少；（使

2、）变小或变少decreaseto…减少至…decreaseby…减少了…e.g.By1881,thepopulationofIrelandhaddecreasedto5.2million.Studentnumbershavedecreasedby500.  拓展：reduceto/reduceby减少到…/减少了…increaseto/increaseby增加到…/增加了…2.Asaresulttheseendangeredanimalsmayevendieout.dieout灭绝、灭亡e.g.Howdidthedinosaurdieout?dieof死于…（通常指疾病、衰老等内

3、因）e.g.Hergrandfatherdiedofcancer. diefrom死于…（通常指交通事故等外因）e.g.Manyvillagersfromsnakebites.dieaway（声音、风、光线等）渐息，渐弱e.g.Thesoundofthecardiedawayinthedistance. diedown（慢慢）熄灭，平静下来e.g.Thefireisdyingdown.dieoff相继死去e.g.Thedeerintheforestarealldyingofffromdisease.拓展：bedyingfor很想要；渴望bedyingtodosth.极想干某事e.

4、g.Sheisdyingtoseeyou.3.Whyaretheyindangerofdisappearing?indanger在危险中，垂危e.g.Wewerewarnedthatwewereindanger.indangerof有……的危险outofdanger脱离危险4.Farmershunteduswithoutmercy.mercyn．仁慈；宽恕；怜悯ask/begformercy请求宽恕showmercyto/havemercyon怜悯/同情/可怜……withmercy仁慈地withoutmercy残忍地；毫不留情地atthemercyof任由……摆布Itisamer

5、cythat...真是万幸……e.g.Shebeggedthepresidenttohavemercyonherhusband.Thepoorcatisatthemercyofthenaughtyboy.5.Theyallowedtouriststohuntonlyacertainnumberofanimalsiftheypaidthefarmers.certainadj.确定的；一定的；某一 (1)becertainof/aboutsth.：对…有把握（=besureof/aboutsth.）becertaintodosth.：一定会做…toacertainextent：一定程

6、度上forcertain=forsure无疑地；确定地makecertain(that...)弄清楚；弄明白Itiscertainthat…：肯定，一定会….（不能说Itissurethat…）e.g.Wearecertaintohaveagoodtimeatthepartytonight.Itiscertainthatsomethingiswrongwiththemachine6.I'mprotectingmyselffrommosquitoes.protect...from...保护……不受……(危害)protect...against保护……以防……(强调较大的事情，如敌

7、人的入侵、天灾等)keep＋宾语＋fromdoingstop＋宾语＋(from)doingprevent＋宾语＋(from)doing阻止……做某事注意：被动语态里from均不可省去，而在主动语态中，与stop/prevent搭配的from可以省略。7.Itcontainsapowerfuldrugwhichaffectsmosquitoes.containvt.包含；容纳；克制(强烈的感情等)；抑制containoneself克制自己containern.容器；集装箱；货柜易混