时间:2019-02-12 作者:英语课 分类:实用英语


英语课

   条件状语从句:分真实条件句和非真实条件句(虚拟语气)


  重点:在条件(时间)状语中,用一般时代替将来时(可参见时间状语从句例子)
  虚拟语气(见“第六讲”)
  主要连接词:
  (1)if / unless (除非 = if not 如果不)
  例如:
  Children should not be taken into the room of a very sick person ______ there is some special reason for it.
  A.except B. besides C. unlessD.whereas
  解题思路:根据上面说过的连接原则,这里必须是一个“连接词”,而A,B都是介词,因此正确答案只能在C,D中选。“whereas”意为“而”,故正确答案为C.(不应把儿童带到重病人房间,除非有某种特殊原因。)
  (2)provided / on condition that (跟句子) (如果…)知道这也是连接词就可以了,一般说,当考题中出现这种词时,应倾向选择。
  3) 原因状语从句:
  主要连接词:because/ since / as
  要点:不要把连接词 because与介词短语because of ( + 名词或-ing形式) 相混淆;
  不要把表示原因的since与表示时间的since“自从…”相混淆;
  不要把表示原因的as与表示时间的as“随着…”相混淆;
  顺便提一下, because表示直接“因果关系”,而since, as 是对事实的说明,主句和从句之间并不一定具有“因果关系”。
  例如:
  As you are already 18 years old, you should know what to do and what not to do. (你已经18岁了,应该知道什么该干什么不该干。)
  这个句子用because连接就不太合适。好在军队职称考试中并不要求作这种分辨。
  …for 注意:一般只能放在主句后面,即主句 + for从句,例如:
  He must have gone to bed, for it is too late. (他肯定已经睡了;现在已经很晚了。)—— 该句不能用because
  now that / seeing that / considering that (由于…)
  Seeing that this problem was settled, they proceeded to the next one.(鉴于这个问题已经解决,他们开始进行下一个问题。)
  …in that(在于…)一般放在主句后面,例如:
  Humans are superior to animals in that they can use languages as a tool to communicate. (人比动物高等,因为人能以语言作为工具进行交际。)

标签: 职称英语
学英语单词
activate access
acute discharge
ADSCs
alternative accounting method
Altretaminum
ammetre
annual working program
antinitrogen
as a setting
automatic shorebased acceptance checkout equipment
Beko
Berëzovskaya
bit-oriented protocol
blacksmith's shop
Bomb.
brasserie
Burnet's axiom
cerebropathia
coastal-gunfirecontrol radar
conispiral
Cook Canyon
copying error
crop microclimate
ctia
cunniff
decision-directed learning
depth multiplexing
ectopia of urinary bladder
elasmosaur
entrance knob
euaspa tayal
exact sequences
forgivance
generalized circles
get the whip hand of someone
Hadol
harmonic balancer
head grouting
high-clearance liquid nitrogen applicator
histoire
hla-dr4
howlet
input data error
internal expansion
ionic theory
jenkinses
kocherization
leader and timing tape
Madanhāti
make a matter
management of risk
marproof
master level control
mcnaught
mixed rearing infection
monochromating crystal
morningglory
motors
mud factor movement
multiple on course signal
musculi depressor anguli oris
needs-baseds
non-adapted nozzle
nonmortgaged
nrp
p-phenolsulfonic acid
pass'd
patrilaterally
patrol telephone
Peking white pear
perfect square
perley
phlegmatizes
phloxine
pipettors
pro-circer
psychical fallacy
Purnia(Purnea)
R-S nomenclature
real-time display system
recurrent
regaining
ribonucleotide reductase
ridged profile
ringness
root system branches
RPPR
sagiv
signal spectacle
slinketh
straining vice
stretch one's wings
sure as hell
syll.
Trademark Registration Treaty
two crystal spectrum
two-lined chestnut borer
unliquidated damages
ventral tank
whited out
Yellowstone Lake