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
abatement of purchase money
acetylcarbamide
all-round turret
annopodine
attendance order
Barguelonne
be declared bankrupt suspend
before image journalizing
bill receivable discounted
Biłgoraj
Bloquiste
bucktons
cacao oil
cadjee
Caragana densa
carbazole
Cedros Trench
chamfron
chiefhood
chloasma cachecticorum
codrington lagoon
coplasticizer
croppable
cross-hatching
DALUS-MUS-PG
deciduous plant
deconceptualised
demand for advances
devoiced
direct drive pump
diverticula ampullae ductus deferentis
Dodecarbonium
dust management of coal handling system
electrolytic white lead
energy industry
ensler
equalizer fulcrum
F-ed
find one's finger on someone's weak spot
follicular gastritis
fore-place
formoguanamine
fructose-6-phosphate
futuristes
G-banding
gahr
ganglion cell layer
gangrenous septicemia
Glycine hispida
grooved joint
have an account to settle with sb.
highest peak
honey-pot ant
icterohematuric
indefeasible right of use
INFOCON
Internet Research Task Force
iron-clad switch gear
jacquard lock
jumped
kachumber
krypton molecular laser
latewakes
mahbuburs
main journal
mamenchisaurian
marienstrasse
maximum operating frequency
methylphenyl ether
MIG gun
Morinda litseifolia
natatorial bird
one-terms
ophiodes
panvitalism
peel-back
petroleum science
price parity scissors
Prince George
quantitative analysis of agricultural chemicals
radio procedure
rallying around
Repentance is good,but innocence is better.
RS-3650
runningidle
screen-scraper
second trimester of pregnancy
seductious
super-long array
table function
tie break
timeworkers
tingsha
traffic collision
tray column
tunnel anti-disaster equipment
unmantles
valve grinder
water of adsorption
windos
wireless POS
word-catching