时间:2019-02-06 作者:英语课 分类:英文语法词汇


英语课

   be动词(am、is、are)+not、


  情态动词can+ not、
  助动词(do、does) + not
  如何将一个肯定的陈述句改为否定句:
  1、看句中有无be动词,如有,直接在be动词后+ not。
  2、看句中有无情态动词,如有,直接在情态动词后+ not。
  3、如上述二者都没有,就应用助动词+ not。分四个步骤:
  (1)肯定陈述句中本来是没有助动词的,要加上去,位置在主语(某人或某物)后,动词前。
  (2)确定助动词用do、does,根据句中动词,动词是原形的助动词就用do,动词是第三人称单数的助动词就用does,
  (3)在助动词后加not。
  (4)原句中动词假如发生变化就要恢复成原形。
  强调一点,有some的要考虑是否要用any。
  be 的用法口诀
  我用am,你用are,is连着他,她,它;
  单数名词用is,复数名词全用are。
  变疑问,往前提,句末问号莫丢弃。
  变否定,更容易,be后not莫忘记。
  疑问否定任你变,句首大写莫迟疑。
  be动词的用法:be (be/is/are/am/was/were)

标签: Be动词
学英语单词
0710
abdominal filaments
age to absorption
amplitude internal friction peak
anderson br-ldge
astrantias
axis out of line
barfly
barnwells
Bleiswijk
bracteal leaf
carbonylh(a)emoglobin
cation exclusion
chastity rings
chelid
chromorhinorrhea
citrus anthracnose
classical adjoint
column headers
comes back to
conduct a business
constrictions
continuousamplitude filter
cotaneous ureterostomy
counterplotters
dance-club
debt crisis
Diazinamide
direct drive wtgs
double pointed
electrical noise
energy absorbing roadside crash barrier
eri silk
Erysimum cheiri
euboia
exclusive patronage contract
f-inger
fit quantity
foot line
frequency doubler
grate-fired boiler
Gunn arteriovenous phenomenon
gurgitator
heaving bottom
hysterophyte
ignitron control
indpendent
interdental space
Kaes-Bechterew's layer
keep top side up
knuckle thread
lard stock
locus function
mandatory extension mechanism
manganotremolite
Marseille-en-Beauvaisis
mine disposals
minimovies
mislead
mydricamide
Māchī Kheyl
net apartment unit area
news-driven
non-acceptation
non-seismic regions
nonprocedural reference
Not to be-tipped
np completeness
Nycoff
oil pressure gage
omniscope
peasant family
periodontal principle fibers
permeamete
physically handing
pick up ears of wheat
pneumatic filling
potential conflict
poulsen arc generator
regrindability
renewal of track
rhabdoweisia laevidens broth
Rodellar
screechin'
sell us
sessility
spelling-bee
superposes
swing from
swing-out
throttled
top roller
topology of uniformity
tractor performance
under God
vacuum suspended power brake
viverrine
watered-down
Whitgiftian
year-to-date used