时间:2019-01-17 作者:英语课 分类:大学四六级阅读


英语课
  英语六级语法情态动词
  这些无人称和数的变化的动词也是经常考查的内容,对于它们的掌握除了一般用法以外,一些特殊的用法一定要牢记。
  1、might不是may的过去式而是表示一种很小的可能性。might如果用完成式则表示过去发生的很小的可能性。如:You might have told me that。
  2、作为情态动词need和dare除在whether和if引出的从句中以外,一般不能用于肯定句,只能用于否定句和疑问句,并 且不采用助动词do,但是作为实义动词则需要do,试比较
  He doesn’t need/dare to do it。
  He needn’t/dare not to do it。
  3、used to表示过去习惯的动作或者状态,即现在已经不存在了,be used to doing则表示习惯于某种状态。< /p>
  4、might和aswell连用表示建议,口气比同样表示建议的had better要婉转一些,两种用法后面都要跟动词原型。< /p>
  5、ought to,should be,must be/must have been,will be,用来表示论断、逻 辑推理等。如:He ought to be here by now。再如:
  “Mary isnt here now。”
  “left by the back door?”
  A.Mustshehave B.MightshehaveC.Hadshe D.Shouldshehave
  根据以上所讲的第一点,B选项表示过去发生的很小的可能性,前半句说玛丽不在这里了,后半句理应对于她去了哪里作一个推测,由 于不确定,用的是问号,所以正确答案是B。
  对于如被动语态、倒装和虚拟语气,这里主要讲解一下它们的一些特殊用法,最常规的用法相信大家都已烂熟于心了。下面先说说倒装。

标签: 大学英语 六级
学英语单词
abrielle
actual measurement on the drawing
Ailanthus Desf.
air-sucking water ejector
albert hall
algebraic cofactor
aminoconanene
arnolds cove
assignment priority
bacony degeneration
basic subsystem module
Brazey
bubble separation(techinque)
buproprion
chain base period
chalasia
Chrome OS
comparative utility
costmaries
courbed
cross nerve
difenolan
discordant injection(transgressive intrusion)
dual system locomotive
elinac
end place
face recognitions
finite difference equation model
flashing of a dynamo
Fortezza
free of damage absolutely
funboy
furrey
Ghats
gouri
hand reamer
harzia verrucosa
hay-jack
hotmelts
hydrogen gas cylinder
hydroxy stearate
igneous accumulate
improved crown grafting
impurple
intermedian cubital vein
Langoon
leucospis japonica
Leyden phial
Longdan Xiegan Wan
magnesium pyrophosphate
medium steels
membrane permeability
moonshiners
morphometrically
myeloangiography
new mercantilism
normally closed
Old Man Jenkins
one-idead
Open bracket
osteosis cutis
partial solid solution
pejo
peperinos
phonetised
ponomaryov
potamogetons
preemption capability
profitable
proximity problem
pub-crawl
pump operated sprayer
pyrophones
radium jaw
ray displacement
reconnaissance balloon
referrent
retaining screw
Sabinov
saltation ash
servility
set of complex features
sheet-musics
Shore hardness number
sidewhisker
sled connector
slop room
speed to pressure transducer
stat padder
straight-reamer
Sukhoy Log
sulfapyridine sodium
superaudio
tassinari
TCA
to bob
topograghy
twisted form
uptails
vake
water borne disease
zerofuel weight