时间:2019-02-04 作者:英语课 分类:英文语法词汇


英语课
 带to 的情态动词

  带to 的情态动词有四个:ought to, have to, used to, be to, 如加上have got to ,(=must), be able to,为六个。它们的疑问,否定形式应予以注意:
  Do they have to pay their bill before the end of the month?
  She didn't use to play tennis before she was fourteen.
  You ought not to have told her all about it.
  Ought he to see a heart specialist at once.?

  ought to 本身作为情态动词使用。其他的词作为实义动词使用,变疑问,否定时,须有do 等助动词协助。

典型例题
 Tom ought not to ___ me your secret, but he meant no harm. 
 A.have told B.tell C.be telling D. having told
 答案A。由于后句为过去时,告诉秘密的动作又发生在其前因,此地应用过去完成时,但它在情态动词 ought to 后,所以用have。


学英语单词
-orexia
abrasive hardness test
absorption current of dielectric
accommodation land(s)
Aconchada
apex point
Ba Ria
baby killers
baradar
be prepossessed by
begaumed
block floating point
cell division cycle gene
centrally planned economy
cermet of life-saving appliance
coarse-filter
combined air force
computer security verification
concrete tubular pile
cone-bearing tree
counterpropagandizing
cycloid curve
deffontaines
diethyl dichlorosilane
double-cup insulator
dresioside
ensors
estres
ethyl myristate
fingernail clam
flash light buttery
frequentflier.com
Fuirena ciliaris
genus Leucaena
half cross belt
hand-pull
have worms
hillside hitch
hook cant
hypercritic
interpretation of data
kayser-fleischer rings
leadership styles
leuco-
line telegraphy
low politics
lung fish
Luzula spicata
Manglietia conifera
market gardeners
mesocycle
microlepia marginata
Mignano
MINIA
moko-moko
mouse-deer
mousquetaire cuff
multidiameter boring cutter
multinomially
naming container
neatresse
Nicoya, Pen.de
nonactivated
nonperishable cargo
Obergriesbach
oconee bellss
optical density of cloud
over-and-over
ovula Nabothi
pall-bearer
planar growth
power density profile
programme step
re-imposed
resenteth
riyaq (rayak)
Sahelian
sake-cake
satellite telecommunication with automatic routine
Severo-Baykal'skoye Nagor'ye
sheet casting
sitherope
solar cell connection
staff light
statisitic reception
sulfide ion
supplicants
Sǒnch'ǒn
tablet
testing medium
tiemaker
to the manner born
trip coil
true equinox
undulated fibrous texture
unoriented crystalline polymer
value expressive function
vanadium tribromide
vapour diagram
versatile pulse shaper
Waleys