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
a monkey on your back
accuracy of readings
alectiss
all-aft
Amylopectine
analytical paper
anti-vaporizing equipment
armature windings
arturius
biological psychiatry
black-mustard-seed oil
blood pH transducer
central banks
checking bit
chinese impact printer
Cold L.
cost review
criterion of efficiency
cyathea fenicis
d-i-y
dryopteris costalisora
em wave
enalaprol
external fired boiler
fetologists
Filicinata
filled can washer
fish kettles
furfags
Goodyera brachystegia
have a thin time
Holme mud sampler
iconic
inventory error
judder bar
jujube tincture
konyot
lapse of memory
Lewis Springs
lien for freight
liquid fillers
list of bidders
live hard
logic state table
low power factor mercury lamp ballast
low RCS pressure
lubricating nipple
managerial control process
medial occipitotemporal gyri
methyltrimethoxysilane
myrianthus
Nauclea gambir
nominal defendant
nonscanning
Norma Jean Baker
on that basis
otooccipital
overgate
pencil-whipped
Penicillium spinulosum
perimenopause
Phobosuchus
podicipediform bird
positive acceleration
proangiogenesis
prochazka
prunusetin
public charge
quillain
race prejudices
radicative
radiofrequency ablation
re-lived
salary structure
scissor-bite
scolopsite
secondary recovery method
Sedaform
shelf car
slitting mill
spaltam
spiral binding
spirographis porphyrin
spotted shark
staphylocoecolysin
static equilibrium value
storage density
superheated area
Tacca integrifolia
tautograph
telephone connection
territorial supremacy
tess of the d'urbervilles
transfer property
trouser-legs
two way break before make contact
Télébodou
variable displacement device
wheelrim
white dot syndromes
Wikstroemia leptophylla
wuthered