时间:2019-02-05 作者:英语课 分类:英文语法词汇


英语课

 1) must用在肯定句中表示较有把握的推测,意为"一定"。
 2) must表对现在的状态或现在正发生的事情的推测时, must 后面通常接系动词be 的原形或行为动词的进行式。
   You have worked hard all day.You must be tired.  你辛苦干一整天,一定累了。(对现在情况的推测判断)
   He must be working in his office. 他一定在办公室工作呢。


 比较:
    He must be staying there. 
    他现在肯定呆在那里。
    He must stay there.
    他必须呆在那。
 3) must 表示对已发生的事情的推测时,must 要接完成式。
   I didn't hear the phone. I must have been asleep 1. 我刚才没有听到电话,我想必是睡着了。


 4) must表示对过去某时正发生的事情的推测,must 后面要接不定式的完成进行式。
  ---Why didn't you answer my phone call?
  ---Well, I must have been sleeping, so I didn't hear it.


 5) 否定推测用can't。
   If Tom didn't leave here until 2 five o'clock, he can't be home yet 3. 如果汤姆五点才离开这儿,他此时一定还未到家。

adj.睡熟了的,麻木的;adv.熟睡地
  • The baby seems to be asleep.那婴孩好像是睡着了。
  • My right foot is asleep.我的右脚麻木了。
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。
adv.还,仍然,即刻;conj.尽管,然而
  • I am not ready yet.我还没有准备好。
  • Beautiful as she is,she didn't find a boyfriend yet.尽管她很漂亮,但还没找到男朋友呢。
学英语单词
aisle space
ALD-B
antisuiseptic sera
beauish
bederal
Bialorbagy
biohydrography
black-bourse
block fitting-out
blue crab
buccal cavity infection
Charles Pk.
class a repair
coagulum content
coal-cutter
complementary subspace
cougar
criminal bankraptcy petition
daemonettes
degree of decentralization
dolichoectasia
double metal relay
electron-stream amplifier
embalance
equilibrium mode
eringen
european economic area (eea)
Fanaye Diéri
fasciculus garcilis
flow, solder
fluid balance
glomus tortuosum
glost firing
goal-post
gold-dusts
grease monkeys
happi coat
herniate
heterotasithynic
hodotermopsis sj?stedti
humblebrags
interreflection ratio
Jaz Drive
kanbun
leading pile
liting
load-current supervision
long flowering period
longe-
Mariotto
member banks
Mesopithecus
microaddress
microsorium fortunei (moore) ching
modern optics
moisture ageing
Mozyr
Nauclea diderrichii
nongaussianities
notchwing
open-boat
pax romanas
PG3
pinged
play-yards
pneumoniac
posterior sphenoidal foramen
primary ion pair
protobioside
rail joint expander
rate of convergence
relativity theory
Saccharomyces epidermica
sanitary pipe laying
schmidbauer
scorer reliability
semitarie
sgab culture
sheathing nail
shrimp med
Shuli
sibiricine
sigers
snow climate
solid household refuse
spectrum character curve
spin-up
SSC-4
start-stop supervisor
straight sending system
strontium-arsenapatite(fermorite)
target return on sales
three high rolling mill
toll rotary connector
tongshan
toxicological
two-light candlestick
Vertumnus
welding-arc voltage
work-places
wring from
yeast industry