时间:2018-12-01 作者:英语课 分类:新东方CET6阅读


英语课

   1) need表示需要,主要用于否定句和疑问句。用于疑问句,肯定回答用must,否定回答用needn't。have to表示他人或客观情况要求“必须”,也可以翻译为“不得不”,have to否定形式意思是“不一定”或“没有必要”。


  【例如】
  You needn't come if you don't want to.
  I don't think you need be so polite to her.
  You don't have to work so hard if you just want to pass Band 4.
  Because of the heavy rain, the children have had to get up earlier than usual this week.
  It was very kind of you to do the washing-up, but you ____it. (CET-4 1998,6)
  A) mustn't have done
  B) would not have done
  C) might not have done
  D) didn't have to
  本句译为:你把这些东西洗了,你真是太好了。但是你没有必要洗。must, would, might后面接动词的完成式,都很少用否定式,而didn't have to表示没有必要,符合题意,故答案为D.
  2) need后面接动词的完成式,主要用于否定句,表示本可不必做某事。
  【例如】
  You ____ all those calculations 1! We have a computer to do that sort 2 of thing. (CET-4 1991)
  A) needn't have done
  B) must not have done
  C) shouldn't have done
  D) can not have done
  “needn't +不定式完成式”表示“本来不必做,但实际做了”。题意是:你没有必要做全部计算,这类计算我们用计算机来做。故答案为A.

1 calculations
n.计算( calculation的名词复数 );盘算;自私的打算;推断
  • We can exclude the possibility of total loss from our calculations. 我们可以在预测中把彻底失败的可能性排除在外。 来自《简明英汉词典》
  • He scored out both calculations and did them again. 他把两个计算结果都划掉,又把它们计算了一遍。 来自《简明英汉词典》
2 sort
v.排序,挑选,分拣;n.种类,类别,性质,程度
  • She was a strange sort of person.她这个人有些古怪。
  • I don't much care for that sort of man.我不太喜欢那种人。
标签: 语法
学英语单词
a first
aharonis
albondigas
amamiclytus hirtipes
asynchronous completion routine
auditory study
bactromyia delicatula
baekeland
bailee receipt
battery-park
beam at
Blastomycetes
british education research association (bera)
bucladesine
cable code
cantingly
chain shuffling
Charms bar
chondrophycus perforatus
civil conspiracy
Codoi
color fatigue
counter-orders
court case
Crawford, Francis Marion
culicoides (avaritia) brevipalpis
curie electroscope
data format item
Deep Throat
diphenamilat
direct-reading compass
divagated
dys-cyesis
ellipse of zero velocity
Ethylbutyrate
feed at the public trough
fire pressure
free schooler
friedkin
furore
gentisyl alcohol
glassworker
growth-with-equity
guitar-playings
highway appurtennance
hip-sickness
Hwelak
Hymenolepididae
iliamnas
initial foam height
integrated noise temperature
iron oxide spent
islamic army of aden-abyans
jdem
karyon
kerfluffle
Kossel's tests
leon battista albertis
lockstitch blindstitch
long-term dynamics
Lyonnet's glands
Ministry of Railways
mirror pair of elements
Munderfing
murpanicin
musculus obliquus ventr. medialis
mushroom-type valve
niyaz
Norfolk County
nose spinner
octoploidy
onidaiko (japan)
oregon crab apples
overalls
pangasianodon gigas
payment based on land shares
polybag
presumptive taxation
pulse discriminator
purplish rice borer
recos
redhand
reflective spectrophotometer
reserve maintenance period
roller ending machine
Ruinerwold
seal pouring
set up a cry
Shazzam
slave driver
specifiable
steel cable bridle
thermostatic control
torsion of testis
total-radiation thermometry
transverse magnetoresistance
trithionate
tubiferous
unportioned
Ward-Leonard electric drive
water drain valve
willingdons