时间:2019-01-08 作者:英语课 分类:大学四六级阅读


英语课

   四级考试在即,四级语法不知如何备考?那跟小编一起学习如何利用常见的语法点备考这即将到来的考试,本文的呈现方法是由简入难,下面就跟小编学习英语语法吧!


  冠词分不定冠词(indefinite article)和定冠词(definite article)两种,一般无句子重音。
  1)不定冠词a,an
  a) a和an均用在单数名词之前,表示某一类人或事物中的"一个",相当于汉语的"一",但不强调数目观念。
  b) a用在辅音之前,an用在元音之前。如:a notebook一个笔记本,a cigarette一支香烟,an old man一位老人,an English class一堂英语课。
  字母u读作[ju:]时,由于第一个音[j]是辅音,故前面用a,不用an。如:a useful book一本有用的书,a university一所大学。字母h如不发音,第一个音又是元音,前面用an而不用a,如an hour [?n’au?]一小时,an honest [?n’ nist] person一个诚实的人。
  c) a和an在句中分别弱读作[E]和[En]。
  2)定冠词the
  a)表示某一类人或事物中的"某一个"或"某一些",相当于汉语的"这"或"那"。
  b)不论单数名词或复数名词,也不论可数名词或不可数名词,前面都可以用the。
  c)在元音前读[Ti],辅音前读[TE]。如the evening (傍晚),the car (汽车);在元音字母u发[ju:]和半元音字母。y发[j]时,仍读[?TE]。如the unit (单位),the yard (院子)。
  英语中不定冠词a (an)的用法
  1)指一个人、动物或一件事物属于某一类。如:
  Xiao Xu’s father is a miner.小徐的父亲是矿工。(而不是其他工种)
  Give me a ballpen , please.请给我一支圆珠笔。(而不是钢笔或其他种类)
  2)指任何一个人、动物或一件事物。如:
  A steel worker makes steel.钢铁工人炼钢。(意即任何一个钢铁工人都炼钢)
  A triangle has three angles.三角形有三个角。(意即任何一个三角形都有三个角)
  3)指某人或某物,但不具体说明何人或何物。如:
  He comes from a firm in Beijing.他来自北京某一家公司。
  A young man wants to see you.有个青年人要见你。
  A car stopped in front of the gate.一辆汽车停在大门前。
  4)不定冠词还可指"事物的单位",如"每日"、"每斤"等。如:
  Butter is 4 yuan a kilo.黄油四元钱一公斤。
  He drove the car at 18 miles an hour.他行车速度为每小时十八英里。
  The Chinese Export Commodities 1 Fair is held in Guangzhou twice a year.中国出口商品交易会每年在广州举行两次。
  The doctor told him to take the medicine three times a day. 医生叫他一天吃三次药。

商品( commodity的名词复数 ); 农产品; 有价值的物品; 有用的东西
  • rice, flour and other basic commodities 稻米、面粉和其他基本商品
  • The manufacturers in some countries dumped their surplus commodities abroad. 一些国家的制造商向国外倾销过剩产品。
标签: 英语四级
学英语单词
affaires d'honneur
air-separating tank
amputation inferinnomino-abdominal
anchor tenant
anodic protector
APORF
apparent radiant
aralia elatas
argipressin
Artie Shaw
assumpsits
aural-type receiver
automatic oil switch
automatic Orsat
automatic tool changing
Bacillus adhaerens
backmost
baldertons
broad arrows
clinical otosclerosis
control rod drive mechanism protective cover
convexo-concave phase
critical angle of beam
crow over
cystauchenotomy
damp-proofing wall
dativizing
delevoy
depreciation sum of expected life method
distary
double precision exponent
dr.robert
dual-coil relay
etymol.
exiguousness
extended filamentary radio nebula
field upgrade
flight data
front resistance
get a good review
glyceryl ester
hucho trout
hygroscopic moisture of grain
input distributed processing
invitation to send
invocant
itemized appropriation
Kafue National Park
loop unit
Lougu
margelan
micropyrometry
misdatings
mixed treatment
multiperiod analysis
musling
Nemachilus dabryi
net position
net safe bearing capacity
non-productive expenditure
oxidation colours
pass into something
pavilion distillator
PE ratio
plasma panel
polarity indicator (current indicator)
pyrrosia polydactyois ching
rachiresistant
radio-frequency
rana brevipoda
random fatigue
raveled strip test
redcross
religious authority
retardive
rimmed shelf
Saladin tithes
sinocentric
sky-sign
sliding seat
Star-shake
Stenocarpus sinuatus
streetfighting
suahili
swanmark
taking wrong bus
tetanised
thaad
the mother and father of
time-of-flight method
timing-gear chamber
transition-point
tribbles
unindulged
up-converter
Villaescusa de Haro
vladdy
water spraying fire extinguishing system
What would you like to eat
whenthey
Wombourne
Zakī, Kūh-e