时间:2019-02-03 作者:英语课 分类:英文语法词汇


英语课

1) 用于完成时的区别
  延续动词表示经验、经历; 瞬间动词表示行为的结 果,不能与表示段的时间状语连用。
   He has completed 1 the work.  他已完成了那项工作。 (表结果)
   I've known 2 him since 3 then.   我从那时起就认识他了。(表经历)

2) 用于till 4 / until 5从句的差异
   延续动词用于肯定句,表示"做……直到……" 瞬间动词用于否定句,表示"到……,才……"
   He didn't come back until ten o'clock.
    他到10 点才回来。
   He slept until ten o'clock.     
    他一直睡到10点。
 
典型例题
1. You don't need to describe 6 her. I ___ her several 7 times. 
A. had 8 met B. have met  C. met D. meet
  答案B. 首先本题后句强调对现在的影响,我知道她的模样,你不用描述。再次,several times告知为反复发生的动作,因此用现在完成时。

2.---I'm sorry to keep you waiting.
 ---Oh, not at all. I ___ here only a few 9 minutes.
A. have been  B. had been  C. was 10 D. will be
  答案A. 等待的动作由过去开始,持续到现在,应用现在完成时。

adj. 已完成的
  • I completed the test within the time allotted . 我在限定的时间内完成了试验。
  • Please return the completed form with your remittance. 请将填好的表格连同汇款寄回。
adj.大家知道的;知名的,已知的
  • He is a known artist.他是一个知名的艺术家。
  • He is known both as a painter and as a statesman.他是知名的画家及政治家。
adv.后来;conj.既然,因为,自从;prep.自从
  • He's been working in a bank since leaving school.自从毕业后,他就一直在一家银行工作。
  • I have known him ever since I was a child.我自孩提时代起就已经认识他了。
conj.直到(...为止);n.(账台中)放钱的抽屉;prep.直到;pron.直到...为止,直到;vt.耕种
  • It was not till 11 o'clock that he came back last night.昨晚直到11点他才回来。
  • You can come to my house till all hours.你多晚来我家都没关系。
prep.直到...为止;conj.直到...时才...
  • He arrived home until midnight.他直到半夜才到家。
  • She didn't sleep until midnight.她直到半夜才睡。
vt.描绘,描写;形容,把…说成
  • Can you describe your son?你能描述一下你儿子 吗?
  • It is very difficult to describe my joy in words.我的快乐难以用语言来形容。
adj.几个,若干,数个;各个的,各自的
  • Words often have several meanings.单词往往有若干个意思。
  • Several new members have come into the club since last year.自去年以来,又有些新成员加入了俱乐部。
vbl.have的过去式和过去分词;conj.有
  • I just had a good idea!我有个好主意!
  • The boy had a small branch of a tree in his hand.这个男孩手上拿一条小树枝。
adj.很少的,不多的,少数的;int.少数的
  • There are few woods in that area.那个地区几乎没有森林。
  • I have a few questions.我有些问题要问你。
v.(is,am的过去式)是,在
  • He said he was right.他说他是正确的。
  • He was cold and hungry.他又冷又饿。
学英语单词
actual available bed days
actual tap major diameter
Adygei
allocation models
anterior sternal gland
anticomplement fluorescent antibody technique
Anzegem
Aphlozyme
axially symmetrical radiator
B-Myb
berlingskes
bone-dusts
calcium ester
camera RAW
carbonisation high temperature
carpoclonicum
click on all cylinders
colour glass filter
contrary efflux
Corbin Hd.
dagg
dangerous cargo on deck
darkened
De minimis non curat lex.
denervated muscle atrophy
device ready
dielectric reflector
duffle
dysoxylum cumingiarum c.dc.
embryonic sac
Euonymus chengii
express trusts
facebase
firstorder
fixedfrequency
forced circulation evaporation
freely locatable program
general epicycloid circular arc spur gear
geobion
guaiacetin
gymnical
hairdressers
helium bottle truck
high-fields
hilma
hossacks
hyperviolence
inflatable product of rubber coated fabrics
installability
interferometer systems
intermediate mamillary nucleus
isospermotoxin
isotopic power
Kalidium caspicum
kunibert
largeish
lithium storage battery
Littonia
local-exchanges
Lolingo
maximum output
Meliosma beaniana
mini-camp
monovision
Namerikawa
needs-cost
nick-hole
non-dynamite source
object viewer
oil sealing device
ophthalmorrhea
Phormidium paludosum
piecen
poolish
postmesenteric
potassium bicarbonate
pre-packed
present output
rami muscularis
regional spillovers
register bank select
salary standardization
schizotypic
scitula
scuds
semi automatic weld
storage section
styfe
succinated
sun dried brick
tea plantation
teleprinting
thaliglucine
to the contrary
tone contrast
Torysa
tribromo-hydrin
trust letter
well filled
westbound train
XENIX
zhu-xi