时间:2019-02-04 作者:英语课 分类:英文语法词汇


英语课
) 经常性或习惯性的动作,常与表示频腮度的时间状语连用。
  时间状语: every…, sometimes, at…, on Sunday
  I leave home for school at 7 every morning.

2) 客观真理,客观存在,科学事实。
  The earth moves around the sun.
  Shanghai lies in the east of China.
3) 表示格言或警句中。
  Pride goes before a fall. 骄者必败。

  注意:此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时。
例:Columbus proved that the earth is round..

4) 现在时刻的状态、能力、性格、个性。
  I don't want so much.
  Ann Wang writes good English but does not speak well.
比较:Now I put the sugar in the cup.
   I am doing my homework now.

  第一句用一般现在时,用于操作演示或指导说明的示范性动作,表示言行的瞬间动作。再如:Now watch me, I switch 1 on the current 2 and stand back. 第二句中的now是进行时的标志,表示正在进行的动作的客观状况,所以后句用一般现在时。

n.开关,电闸,转换,软枝;vt.转变,切换,摆动,转换,使转轨;vi.转换,变换,摆动
  • The switch on the wall was beyond the baby's reach.墙上的开关小孩子是够不到的。
  • There's been a switch in our plans.我们的计划改变了。
n.涌流,趋势,电流,水流,气流;adj.当前的,通用的,流通的,现在的,草写的,最近的
  • Electric current is often powerful enough to kill a man.电流常强得足以致命。
  • There is a story about her in the current number.最近一期上有关于她的故事。
学英语单词
adhering apparatus
all the best
allotraploid
alphette
alternative text
anacapri
anthracenesulfonic acid
avian ingestion
be in practice
birdcage clock
came back
cartoonery
caryophyllia
Champtoceaux
chloroacetal
comprehensive management
conduct a survey
cryptogramma japonica prantl
cuman
cuti
cysticocolic fistula
dark gray
Dedovsk
deferrer
Dhron
directional differentiation
distributed interac
dropping that
ear worm
earnshaw theorem
Eight Masters of Nanjing
eleonore
end charging
endo-exo isomerization
Ethychlordiphene
exchange text string
fiducial interval range
fire-bomber
floral-scent
forced-circulation straight-tube steam generator
fower
geranylation
Goodyera hachijoensis
hand-held TV camera
heteropolar dynamo
home computer
implant denture aesthetics
inclination perturbation
induced-current dipole moment
Khanbalik
knowledge-based
Lamina basalis
liver pigment
look not quite the thing
Maarheeze
melilotoides
mexicanos
minimum detectable flux density
model line
naturaliss
NCLEX-RN
Nolde, Emil
Oberonia rosea
obtundents
onkilonite
original catalog
Palmeta, Cayo
pan shaped
parallel data processing
phrenoglotic
plenum ventilation
plycondensation
political programs
polyethersulphones
prairie flax
preforming technique
quasiscientific
regitine
relatively compact semi-group
reversible saturation-adiabatic process
sat-nav
savescumming
scholte
seaperch
shoe retracting spring
sky-staring dragon eyes
spinal column
spoon sample
stage dancings
strepococcus acrodermatitis
sulfite cellulose extract
taenidia
telephone call length
to streak
towing tank
transformation encoding
trichothecenes
ultra-high-vacuum physical vapor deposition
veterinary viology
voice-recognition dialer
vulvovestibular anal atresia
weighted mean