Unit+4+Fun+with+science+Grammar+and+usage+Subjunctive+mood+(I)+课件【考点精研】高中英语牛津译林版（2020）选修第一册.pptx

Unit4Funwithscience

Grammarandusage;mushroom

tackletheproblem

caterforonesneeds

bringintouse

domesticallyandinternationally

upgrade

aproposalfor

beunderreview;(1)Whatdoestheauthorthinkofthetransportsysteminthecity?

Effective.

(2)Whenwastheundergroundbroughtintouse?

Tenyearsago.

(3)Howmanytransportoptionshavebeenmentionedintheblogpost?Whatarethey?

Four.Buses,theunderground,airtransportandriverferries.;Findthesentenceswithunrealconditionalsintheblogpostandfillinthetable:;Readandcomparethefollowingpairsofsentences.

(1)a.Iftheylivedinourcity,theycouldusetheferryfromtimetotime.

b.Livinginourcity,theycanusetheferryfromtimetotime.

(2)a.Ifthisairporthadntbeenconstructed,ourcitywouldnthaveattractedsomanytourists.

b.Thisairportwasconstructed,soourcityattractedsomanytourists.

(3)a.Ifabiggerairportwerebuilt,thetravellerexperienceshouldbegreatlyimproved.

b.Afterabiggerairportisbuilt,thetravellerexperiencewillbegreatlyimproved.

(4)a.Ifthecityhadntbuilttheundergroundsystem,gettingaroundwouldntbesoconvenient.

b.Gettingaroundissoconvenient,becausethecitybuilttheundergroundsystem.;Finish“Workingouttherules”ofpartAonP34.;主从句

构成

意义;条件状语从句中含有were、had、或should时，可以将它们置于句首，省略连词if。如：

Ifyouweretotakethetrain,youcouldgettheresooner.

→Wereyoutotakethetrain,youcouldgettheresooner.

Ifyouhadtoldmethetruthearlier,Iwouldnothavecomplained.

→Hadyoutoldmethetruthearlier,Iwouldnothavecomplained.

Ifyoushouldmakeamistake,youwouldhavetodotheexperimentagain.

→Shouldyoumakeamistake,youwouldhavetodotheexperimentagain.

;Step3Applyingtherules;FinishB2onpage35ofthetextbook.

Suggestedanswers:

1)c2)b3)e4)a;PartBonP67;Unit2Workingthe