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
amygdal-
ATXRP
avant-courier
B. to B.
backward swinging
banana pin
basaltic augite
bench-mark prblem
Bis(4-Methyl-1-Homopiperazinylthiocarbonyl)disulfide
bledisloes
brass neck
Breitau
bulked glass yarn
butterfly shaped tank bath
campaignfinance
cannon bones
car team
cinder reinjection
clodinafop-propargyl
coding of continuous track circuit
coking of tubing
conjunctus
conversion between different wave numbers
Cotyleden
cover up sth
cracker bonbons
cranio-encephalic traumas
cross-posted
d-ind
decathletes
dissectus
distant switching-in
drinks dispenser
dystome spar (datolite)
e-mail response management system
ears burn
equivalent knot
fell-mongers' disease
fiber glass insulation
flying spot film reader
fog patches
gas delivery
general pathology
geometric multiplication
granberry
gyrfalcon
haets
impulse action
inflammablefreight
interpost
isometabole
kangarina trinerva
kreatins
Linnaeus's two-toed sloth
luminatus
lystrosaurids
menlove
morindas
MT (maximum torque)
multiwall sack
niccolo paganinis
Nitrofurmethone
nobilite
off-coast
pictographically
potassium ferricyanide
pseudopalisades
rafah
rainfed rice field
recarbonizer
retroactive law
REX (real-time executive routine)
rumanias
rupestral plants
rupture of felt
Scolytus
shale bed
Simone Boccanegra
single gene mutation
single machine infinite bus system
skate over thin ice
sorted ore
sources of fund
spheroidal powder
stains
static source
stratocumulus translucidus
suborder Xenarthra
system clock control
Tbilisi syndrome
thalictrum trichopus franch.
turn of the market
twinver form
typhlodromips newsami
ultra-low interfacial tension
underpaid
unexperimented
unfellowed
unipolar conduction
westcountry
Yone-yama