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
Aluminostomy
annonaceous
anomalous Green function
ataxia telangiec tasia syndrome
axinost (or axonost)
beach slope
biker
body block
caretaker speech
CAT (control and test)
Cervulus
characteristic impedance of lossless line
coal hulk
coarse thread tap
cockled
colpohyperplasia emphysematosa
computer operating system
continuous-way control
Coral Gables
cork tree
cost-volume-profit graph
cowessess
dari
day corrector knob
disarticulating
dress-conscious
dyaus-pitars
epidemic urticaria
exhaust-valve cam
fast combat support ship
fetid horehounds
flat sector magnet
foam rubber products
fog effect
Ghaddaffi
gram centimeter
great crested newt
heartstrings
htel
hydroperoxidation
image composition
intracellulare
johany
knowlege
law of diminishing marginal rate of technical substitution
letterhack
line light source
long - playing record
lop sth off
low rental
mail stops
Medifome
michiel
moisture suction
multiprogrammed computation
musculi adductor hallucis
nitida
no laughing matter
outframing
P-Celtic
particular Churches
plesiomorphically
plumbous metaplumbate
polyphase heating r
povlsen
pre-pilot
Priargunsk
primal cluster
Primula orbicularis
projection Ektar lens
public administration review (par)
quick service
rainmeter
raveling
red whortleberry
reducing roasting
reprovingly
Ricardo, David
river valley
sapere aude
scalar flux
sclerenchymous fibre
sclerification
segment mode
setback capacity
silk throwing
spiculating
Student's t test
subdeaconry
The biter is sometimes bit.
the way of the worlds
Thrixspermum pensile
Tom Sawyering
transmigrable
triode field effect transistor
urgent-care
vulgariser
wb (wide band)
wles
zucco