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
5-methyl-2-furoic acid
abdominizer
accustom to
Acmella brachyglossa
adsorbed gas
all bottom
amlong
Anaphalis surculosa
antiglobalists
atrioventricular septum
autolipophagosomes
band suction
bandpass optical filter
bar-crested antshrikes
bargaret
boost-glide vehicle
bowling leagues
brain abscess
branch height
combinatorial digital circuit
cyberauction
diagonal partial sum
direct mapping
draws back
dudely
ecosocial
energy auditor
Fagara nitida
fixed block
flame black
foreign settlers
gas flow pressure measurement
gelpurified
greengrocer's
gyro graph
heartwell
heroinic
heterophobe
high temperature lacquer
himantura undulata
horse mine
humeralradial
hunterman
hypocomplementemias
i-gremed
Ibis ibis
implicit enumeration
income tax paid
intrabrachial
kiddiers
last for
leakoff-type shaft seat
macrolepidopteron
management indirect costs
manufacturing plant
martensite range
mcw
metasediments
monocolor
multiple crops
multiple tap transformer
museen
narmer
nordenskiold
odorin
one over one address code
orthowater
P orbital
paregal
phase shifting transformer
Poa wardiana
polar mutation
polydactyls
procedure synchronization
proportional navigation course
proskomide
pseudoallochem
purpureocobaltic
q.2 h.
reagent paper
red ultramarine
resin hold-up tank
Saladin malt
Sasa hubeiensis
scatter loading
self-trainings
smokie
SPTURP
steeliest
stress release
stringlet
student recommended for admission
Tarim River
TESSA-only Individual Savings Account
topped his part
toxicity radiation
union pacific locomotive
unordinal
vc (vitrual channel)
wheat flag smuts
Wiemerstedt
yozoes