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
animal tissues
automatic low vacuum regulator
badrinath (badarinath)
Ban Mae Mo
biofilms
bit race
brain neurophysiology
carboxyl methyltransferase
celatis
ceramic gas turbine
chamfer needle
chili dogs
class division
cupric rhodanate
defense reactions
dentogingival unit
dermatate
dyer's greenweed
Earth Shoes, earth shoes
electrical system
envenomizations
erythroleukaemias
eucamptodromous
European Transport Law
excess demand curve
exercise in futility
eyases
flash-signal lamp
flatline
frame relay assembler dissembler
galvanized iron sheet weathering
gaouette
go out of date
gomorrahs
Greens Cut
hair molecule
henpecker
ho chi minh city (saigon)
horizontal band sawing machine
husband and wife
incended
infobond
iridallochrosis
karatavicin
Khamir
Kyiv
liquid fuel fired boiler
localized disturbance
Madre de Dios, I.
Manhattan cocktail
marine environmental hydrodynamics
metonym
microwave device
milk-sops
Mpbs
multiplicative operator
obligation relation
omniplane
operating loss
Oyrot Autonomous Oblast
palping foot
Pdn, public data network.
physiological reactions
plantation forestry
posterior lateral margin
propionate rule
Proteus americanus
pudus
reduced voltage starter
reinicke
RF in
Rubus macilentus
schedule algorithm
self acting control
sensitivity adjustment screw
series tripping
sewamono
Share scleroscope hardness
simple preposition
sinuous-header
slay level
solemnis
splashed lustre
spokestitching
starting barrel
strand dune
sulphindylic
tangertin
tappit
tasajo
tax assignment system
tax rate application
the elixir of life
tracheal rale
trihydroxy alcolhol
trim adjustment
vagilen
vallecular dysphagia
witha
yazh
ypthima esakii
zero standard