时间:2019-02-23 作者:英语课 分类:英语PK台


英语课

   定义:


  在句子中担当主语的是一个从句,这个从句就叫做主语从句。也就是说:主语从句是在复合句中充当主语的从句,通常放在主句谓语动词之前或由形式主语it代替,而本身放在句子末尾。
  例句:
  That she survived the air crash is a miracle.
  空难中她幸存了,简直是个奇迹。
  Whether we will hold a party in the open air tomorrow depends on the weather.
  明天是否可以在露天开派对得看天气情况。
  What you need is more practice.
  你需要的就是实践。
  Where we should go is a problem.
  我们要去哪儿真是一个问题。
  When they will come hasn't been made public.
  他们的来访时间还未公布。
  It is common knowledge that the whale is not a fish.
  鲸鱼不是鱼,这是一个常识。
  引导词(连词):
  1. 从属连词引导的主语从句:that/whether/if
  that引导的主语从句:引导词that 无含义,在句中不单独做成分,不可以省。注意:That 引导主语从句通常用it作形式主语。
  例如:
  That you will win the medal seems unlikely.
  你不太可能获得奖牌。
  That she survived the air crash is a miracle.
  空难中她幸存了,简直是个奇迹。
  It is common knowledge that the whale is not a fish.
  鲸鱼不是鱼,这是一个常识。
  whether 引导的主语从句:whether有含义(是否),在句中不单独做成分,不可以省。注意:引导主语从句,不能用if不能在开头,只能用whether。
  例如:
  Whether we will hold a party in the open air tomorrow depends on the weather.
  明天是否可以在露天开派对得看天气情况。
  Whether she is coming or not doesn't matter too much.
  她能不能来其实并不重要。
  if 引导的主语从句:if不能在开头,需要用形式主语it,句首只能用whether。
  例如:
  It is not my business if it is right to do.
  这样做对不对不关我的事。
  不能说:If it is right to do is not my business.
  可以说:Whether it is right to do is not my business.
  2. 用连接代词引导的主语从句:who, whose, whom, which, what, whoever, whomever, whichever, whatever
  在由连接代词who, whose, whom, which, what, whoever, whomever, whichever, whatever引导的名词性从句中,其连接代词在句中起名词性作用,担当一定成分。
  例如:
  What you need is more practice.
  你需要的就是实践。
  Whatever we learn from the changes of Chinese characters is the core of social and cultural development.
  我们从学习中文的变化中可以了解社会文化发展的精髓。
  补充:whatever/whoever的功用
  whatever, whoever在主语从句中不含疑问意义,它引导主语从句,并在从句中作主语、宾语、表语等。whatever=anything that; whoever=anyone who。要注意和whatever, whoever引导的让步状语从句的区别。
  例如:
  任何触犯法律的人都将受到惩罚。
  Whoever breaks the law should be punished. (主语从句)
  (=Anyone who breaks the law should be punished.)
  Whoever breaks the law, he should be punished. (让步状语从句)
  (=No matter who breaks the law, he should be punished.)
  3. 连接副词:when, where, why, how
  由连接副词when, where, why, how引导的名词性从句(其连接副词有含义,在句中作状语)。
  例如:
  Where we should go is a problem.
  我们要去哪儿真的是一个问题。
  When they will come hasn't been made public.
  他们的来访时间还未公布。

标签: 英语PK台
学英语单词
academy figures
ADS-A
adzs
Alatyr
aloetical
amylostatolith
angiocholecystitis
ansties
aquamarines
arteriola
automatic restart error code
azonic acid
bacillarite(leverrierite)
Bedford-Stuyvesant, Bed-Stuy
blood sera
boycunts
breakeven analysis
bromofenofos
cellodextrins
cheesemaker
circumstantiate
cluster virus
coherent polarimetric radar
cupric subcarbonate
deaerations
deep-freeze
documentary bill with letter of credit
Duy Tien
dyrege
engagement process
escape wheel tooth
Ewald-Korfeld method
first council of nicaeas
fixations
flintridge
flopperoos
fly cotton
fungi imperfect
ga(u)ge interferometer
guvnor
half tube
hassell
Holguera
Ilhae-ri
initial instruction
insectoid
intraseasonal
isothermal surface
John-apples
knock someone off his pedestal
L. S.
liquid sulfur dioxide-benzene process
longissimum
management echelon
maslow's needs hierarchy
medium-energy cyclotron
membrana atlantooccipitalis anterior
military restricted area management
mixed herbs
model adjustment technique
modular housing units
moistener pad
mononym
mortgage instrument
motor gunboat
motuca
multi-processor systems
musae
mutual inductance bridge
natural killers
Norrskedika
one-toed
Ovindoli
palaeornithology
plant air
pocket sextant
Polyura
popadoms
pressure regulating box
RDS.A
remote supervisory control system
restockers
rhomboid prism
Roanoke R.
roard
schoof
segmented bed slumping
setting angle of propeller blade
simulated-operations testing
sing sb's praise
St-Jean-Baptiste
system-builts
tapping device
titanic iron (ilmenite)
trimmed value
Tröllakirkja
Tymovskiy Rayon
unplitable
uraminotauric acid
vibration drift rate
vowel colour
waxbirds