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
acquired enterprise
AHQ
air and gas mixer
allocation model
annual discharge
antispastics
average surveyor
bank field
baseline shift
batch-wise operation
be in the possession of
boomer-age
bottom hole float type flowmeter
caddishnesses
calcined kaolin
Camus
capital from defaulted subscriptions
cardiokymographic
centrum commune
ch?ng wu
checkout facility
cheeseparer
choubnikovite (schubnikovite)
complete cost
condensate draining
constant-energy
conveyor oven
counterfeiters
cumulative average chart
cylindrical center type grinder
decarbamylation constant
deoxyguanylate
diclofenac potassiums
diffusion.
dis concerting
dream-team
E. W. Morley
electric servomechanism
ephemeron (ephemera)
epitaxial planar technique
fatty acid pitch
fiber-basket
Flow Meters
gate type gear shift
genus Danaus
go bloody
Grubb's tests
heart capillaries
Impatiens recurvicornis
isobaric nucleus
labral gland
Langer bridge
lashing plate
local feed back
low altitude detection
macrocheira kaempferis
megrimss
merionoeda formosana formosana
metroplex
milk-borne epidemic
Milly Milly
multicomponent cementation
Neziah
non democratic
Ogrodniki
over-hanging
Oxyvanadinite
paraboloid reflectors
paste mixer
photobank
porous ceramic filter media
power conversion system
precautionary measures
purtily
reference direction
remote pipetter
Ronvet
rotating-field generator
rules-of-thumb
Salangidae
Sekwa
shape welding
splatterpunks
structural weld
subevent
surjective linear mapping
symbiotrophism
tantalum thin-film microcircuits
tephre
thermocouple generator
thiophenyla
third estates
tiprostanide
triethyl-ethoxy-silicane
trimeter
triphenyltetrazolium chloride
tubular evaporator
Tutonchany
twinkledum
vicorps
wanteau