专四常考语法点汇总.ppt

Grammar一、虚拟语气(UnitOne1,14,UnitTwo3,UnitThree1,UnitFour1,12,UnitFive7)7．wouldrather，wouldsooner,wouldassoon,justassoon后
接动词原形，指现在或将来时间，表示一种主观愿望或选择。
e.g.Hewouldsoonerdiethansurrender.
接不定式完成式，表示过去的某种选择不恰当。
e.g.I’drathernothavetoldherthenews.Sheissuchagossip.
接从句，用虚拟语气，一般过去时表示一个现在或将来的愿望，过去完成时表示一个过去的愿望。
e.g.I’dratherthatyoupaidthemoneyyourself.
Iwouldsoonershepaintedthewallgreennexttime.
I’dsoonershehadn’tdonethat.二．As的一些用法（UnitOne2,4）as构成的一些短语
notsomuchasdo/withoutsomuchasdoing连…都不
notsuchastodo不致于
insofaras视…而定
asyet至今，尚
asregards/concerns/concerning关于
asoftenasnot常常
assoonasnot更愿
assuch从字面意义看，严格来说
(just)assoon…as宁可
Shecannotsomuchaswriteherownname.
Sheleftwithoutsomuchassaying“Thankingyou”.
Wealth,assuch,doesn’tmattermuch.
Thenewjobisnotapromotionassuchbutithasgoodprospects.
Duringfoggyweatherthetrainsarelateasoftenasnot.
Shewouldstayathomeassoonasnot.
Youwilllearnyourlessononlyinsofarasyouarewillingtostudythem.
Herillnesswasnotsuchastocauseanyanxiety.
三．倒装结构（UnitOne3,UnitTwo11,UnitThree8）6.比较状语从句和方式状语从句中的倒装：than或as引导的分句，如果谓语动词省略或表示省略，且是两个句子的主语相比较时，要用倒装，助动词放在主语前。（UnitTwo11）
WesternNebraskagenerallyreceiveslesssnowthan_____easternNebraska.
A)doesB)in
C)itdoesinD)initdoes四．分词的独立主格结构(UnitOne5,8,UnitTwo1,14,UnitFour14,UnitFive15)3)Such____thecase,youhavenogroundsfordismissinghim.
A.isB.areC.beD.being

2.There+being结构
Astherewasnofurtherbusinesstodiscuss,weallwenthome.
→Therebeingnofurtherbusinesstodiscuss,weallwenthome.
3.分词的时态意义
e.g.
1)Thequestionbeingdiscussedisofgreatimportance.
2)Thequestion(havingbeen)discussedisofgreatimportance.
3)Thequestiontobediscussedisofgreatimportance.五．否定结构（UnitOne6,UnitTwo15）3.no/nobody…but都…，只有…才，没有…不…这种结构中but起关系代词的作用，相当于that,which,who…not
e.g.Thereisnomanbuthashisfaults.
Thereisnomaterialbutwilldeformmoreorlessundertheactionsofforces.
4.nothingelsethan/nothingbut/nonebut只有，仅仅
e.g.Nonebutafoolwilldosuchathing.
Thechildrenwanttodonothingbut/elsethanwatchtelevision.5.no/noneotherthan正是，仅仅是
e.g.Thisisnootherthanthebookwewanttobuy.
Sheisnoneo