时间:2019-01-04 作者:英语课 分类:英文语法词汇


英语课

  Since 用来说明动作起始时间,for用来说明动作延续时间长度。
  I have lived here for more than twenty years.
  I have lived here since I was born..
  My aunt has worked in a clinic since 1949. 
  Some new oilfields have been opened up since 1976.
  I have known 1 Xiao Li since she was a little girl. 
  My brother has been in the Youth League for two years. 
  I have not heard from my uncle for a long time.


  注意:并非有for 作为时间状语的句子都用现在完成时。
   I worked here for more than twenty years.
   (我现在已不在这里工作。)
   I have worked here for many years.   
   (现在我仍在这里工作。)


  小窍门: 当现在完成时+一段时间,这一结构中,我们用下面的公式转化,很容易就能排除非延续动词在完成时中的误使。
  1) (对) Tom has studied Russian for three years.
    = Tom began to study Russian three years ago, and is still studying it now.
  2) (错) Harry 2 has got married for six years.
    = Harry began to get married six years ago, and is still getting married now.
  显然,第二句不对,它应改为 Harry got married six years ago. 或 Harry has been married for six years.

adj.大家知道的;知名的,已知的
  • He is a known artist.他是一个知名的艺术家。
  • He is known both as a painter and as a statesman.他是知名的画家及政治家。
vt.掠夺,蹂躏,使苦恼
  • Today,people feel more hurried and harried.今天,人们感到更加忙碌和苦恼。
  • Obama harried business by Healthcare Reform plan.奥巴马用医改掠夺了商界。
学英语单词
actuating lever
ageing hardening
air launched cruise missile
Amphicoelia
approximation by operator
Atherolipin
athletic communication psychology
back out
baggage-rooms
beef-witted
bimorphic male
bottle track
brachyeardia
catch ratline
central tegmental tract
climatic stability theory
communication modem
counterguerilla
couplets on pillar
cylindruria
derne
design-construction team
dirty Sanchezes
Edlitz
electrolytic gravimetry
electronic inductivity
enterocardiovirus
Every bean has its black
exit jewel
fast loading
fault tolerant routing algorithm
feature-based design
fenestellae
filicanes
fluid state
full circle girder erecting crane
future light cone
grieve
histrionic
i-wived
identification of immature infant
Insiza
integrated trajectory system
issue in
kilogal meter
left internal spermatic vein
lifoes
low pump suction pressure
low-voltage capacitor discharge
make your bread
Mankayan
Mexican stand-off
National Association of Precancel Collectors
navarea warning service
nickums
nonmythic
North Fareham
octonare
Olorani
Oseen force
outcools
paciest
padbolt
panoptically
pinest
plane bed
plusia agnata staudinger
polytropic expansion
promotion and transfer
propositional dynamic logic
protanabol
quarter moon
radiatio
radio environment
regular epitaxy
road level
rotating contactor
sales representatives
sell't
shifting shaft
slugginess
soil bearing value
spice mixture
stinking rich
stitch line
subdermal vascular plexus free skin graft
subintrance
technically strong market
temperature expansion of pipes
terminal interchange
thyroid hormone evaluation
tongbok (dongbog)
trigyric
upbar
verbal creation
Vilna Gaon
vitamin b12 monocarboxylic acid
wako
Wiesentheid
wound heart wood
yahe (papua new guinea)
yoy