时间:2019-02-08 作者:英语课 分类:英文语法词汇


英语课

1) 两词都是'必须'的意思,have to 表示客观的需要, must 表示说话人主观上的看法,既主观上的必要。
  My brother was 1 very ill, so I had 2 to call the doctor in the middle of the night. 我弟弟病得很厉害,我只得半夜里把医生请来。(客观上需要做这件事)
  He said 3 that they must work hard. 他说他们必须努力工作。(主观上要做这件事)

2) have to有人称、数、时态的变化,而must只有一种形式。但must 可用于间接引语中表示过去的必要或义务。
He had to look after his sister yesterday.

3) 在否定结构中: don't have to  表示"不必"
          mustn't    表示"禁止",
   You don't have to tell him about it.  你不一定要把此事告诉他。
   You mustn't tell him about it.    你一定不要把这件事告诉他。





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1
was
bglwv
  
 


v.(is,am的过去式)是,在


参考例句:





He said he was right.他说他是正确的。
He was cold and hungry.他又冷又饿。












2
had
FeBxb
  
 


vbl.have的过去式和过去分词;conj.有


参考例句:





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。












3
said
IYtxh
  
 


v.动词say的过去式、过去分词


参考例句:





He said to me that he could not come.他对我说他不能来。
He said to his mother that he would do it by himself.他对他的母亲说他将自己独立做那件事。













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。
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。
v.动词say的过去式、过去分词
  • He said to me that he could not come.他对我说他不能来。
  • He said to his mother that he would do it by himself.他对他的母亲说他将自己独立做那件事。
学英语单词
accumulation soil moisture
afairyists
alcoholic paranoia
AMOLIN
Ankole
articulation of pubis
auxiliary building and structure of thermal power plant
Badisch converter
basras
bellwaver
Bernix
Billings, Reprêsa
bought in components
breakthrough innovations
caracoli
catch-all party
Connell suture
continental cyclone
coreferential
Cushing's reaction
damage assessment routines
data sampling unit
deep dentin caries
dermi
deuterencephalon
diagrammatical
die before one's time
discretionary interest
Djamaa
dry discharged battery
eat no fish
ebullated bed reactor
educated
energumens
euphotides
Eygurande
fee for possession and use of
first drop
flying bridges
fruchtschieste
fuel uranium
fuel-saving stove
Gastrochilus bellinus
general hand tools
give the key a turn
heat treating oil
hightemperature and high pressure dyeing process
holding temperature
IA64
implantable pump
isere rivers
judex
Kemerovskaya Oblast'
ketoacyl
landline charge
launderettes
malpelo
mephistophelean journalism
micro dispersion process
mis-shapement
molinet
multi-storied stand
Nodi lymphatici faciales
Ofiddousa, Nisis
peacing
phagocaryosis
phenomenalised
pointing out
portfolios of financial assets
postconciliar
privacy channel
relativistic magnetic accelerator
repowering
rewald
sangoes
secondary (cold) front
sentimentalising
shaft runout
shove over
sight angle
signal group
sleythe
slippage tests
social conservatives
softcopies
special overhauls
stabulation
staggered breaks
stapletons
strait laced
substoichiometric isotope dilution
subway motor train unit
sunshower
sweeping vessel
tiber-
tin-uranium system
to-and-fro anesthesia apparatus
top flask
tubule dentinal
vibrating-plate viscosimeter
walshe
zizzes