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
acetobutylicum
adverse drug events
after - sale service department
akasic
angelism
anorchus
answering machine
antipodists
antipyrino-caffeinum citricum
auto-Transfusion
Axenfeld's test
Bashir
black-on-black
bolometric method
Bolshevize, bolshevized
Burry Inlet
chopper spectrophotometer
clotbusters
combination carrier
complementary MOS integrated circuit
consolatory
critical magnetic flux density
Current Coupon
decline of water table
detonation wave
diareses
direct coupling system
direito
Doppler navigation system
dot speed
eacc
ECE
Edwin Drood
efficiency expert
electron-pair production
ever-handy
fancy for
feigned issue
fjord oceanography
flax dodder
fordist model
full-louvered door
functional assembly
further development
genus batrachosepss
genus Helipterum
group incentive plan
haulered
home-repair
icteric phthisis
indexlink
infidels
international liquidity units
Isocainide
isogredient
Jewified
longitude difference
major conjugate arc
man made satellite
means of fastening
megahenry
Middendorfa, Mys
minister of economic affairs
Morro, R.
NEC necessary
nonvascular organisms
nuculana husamaru
overlay contact
parameter model
pop-up missile
Pulindas
pump surging
relative degree of development
Republic of Finland
Richard Haldane
running set
Rupert
Ruppia maritima
sack trucks
safety colour
sanitoriums
satellite position
seven-card stud
shaped joist
shoot-em-up
singularity line
splittail
step up n.
superintending
supersalts
swine rearing
talipes planus
Tintigny
transprosed
uncollegiate
ungroup
value broker
waive sb off
X-Machine
You never know your luck.
zinc dichromate