外研版（2019）选择性必修 第四册Unit5 Into the unknown Developing ideas 课件(共43张PPT).pptxVIP

;Learningaims;Leading-in

Watchthevideoandanswerthequestions.;;Asharedbike;Lookandanswer:;Readthepassageandfindoutwhathas

beendiscoveredintheoceandepths.;A.Weareenteringanewageofoceanicdiscovery.

B.WehavelittleknowledgeofEarth’sseabed.

C.Manyarchaeologicalfindsaremadeinshallowwaters.

D.Thereareextraordinarycreaturesinthedeepsea.

E.Theoceansareavaluablesourceofnaturalresources.;Understandthestructureofthepassage.;;;;1Whydoyouthinktheauthorusesstatisticsinthepassage?

2Whatotherexamplesofoceanexplorationdoyouknowof?

3Whatdoyouthinkdrivestheexplorationoftheoceans?

4Whatcommonmessagedothetworeadingpassagesinthisunitconvey?Howdotheyeachbuilduponthisidea?

;1.retreatv.后退；离开；退避

(教材原句)Insteadofretreatingtotheircaves,someofourancestorschosetosubduetheirfearsandpursuetheunknown—andthiscuriosityledthemto,forinstance,discovertheuseoffire.我们的一些祖先没有撤退到他们的洞穴，而是选择压抑他们的恐惧，追求未知——这种好奇心引导他们(发现了很多未知事物)，例如，发现了火的使用。

Noretreatisowed,onlyadvanced.

只许前进，不许后退。

AfteraweeksworkIliketoretreatto/intothecountrytorelax.

工作一周之后，我喜欢躲到乡下放松一下。

Iwillnotretreatfrommycommitments.

我不会躲避我承诺的任务。

;【知识拓展】

1.retreatto/into退到……；躲到……

retreatfrom从……撤退

2.beata(hasty)retreat快速撤退；打退堂鼓

soundtheretreat发出撤退信号

【即学即练】单句语法填空

1.Itishightimethatwe______________(retreat)fromtheoccupiedcity.

2.Thesoldierswereforcedtoretreat_____________theshipandreturntothebeach.

3.Theenemyretreated_____________thetown,soourarmyhadtowaitforagoodchance.

4.Attheendofthedance,Jessicathankedhimandbeat__________hastyretreat.;3.shrinkv.避免做,不愿做

(教材原句)Whilethereisnoneedforustoshrinkfromnewsituations,weshouldalwayslookintothingsfirstandconsiderouroptions.

虽然我们没有必要在新的情况下退缩，但我们应该总是先调查事情，并且考虑我们的选择。

Thejeanswillshrinkinthewash.

那些牛仔裤洗过以后会缩水。

Ashymanshrinks