时间:2019-02-18 作者:英语课 分类:英文语法词汇


英语课

   一、at, on, in


  (A) at表示“在某一时刻,某一时点”。如:
  I get up at 6:00 every day. 我每天6点起床。
  注:at daybreak在黎明;at noon在中午;at night在夜间;at Christmas在圣诞节期间;at the age of five在五岁时。
  (B) on表示“在具体某一天或某天的上、下午”。如:
  I heard a shot 1 on (the morning of ) March 18. 三月十八日(早晨) 我听到一声枪响。
  We don’t have classes on Sunday. 星期天我们不上课。
  (C) in表示“在某世纪、年、季度、月、周”以及泛指的上、下午、晚上。如:
  in the 20th century在20世纪;in 1999在1999年;in winter在冬季;in September在九月;in the morning/afternoon/evening 在上午/下午/晚上。
  二、for, during, through
  (A) for后接“一段时间”,表示某事持续多久,多与完成时连用。如:
  She has been ill for several days. 她已经病了几天了。
  (B) during表示“在……期间”。如:
  I went to France for two weeks during the summer. 夏天我去了法国两个星期。
  (C) through表示“一直……,自始至终”。如:
  They worked hard through the winter. 整个冬天他们都在努力工作。
  三、from, since
  (A) from表示“时间的起点”,可译作“从……”,多用于“from…to/till…”中。如:
  You can come anytime from Monday to Friday. 周一至周五你什么时间来都行。
  (B) since表示“自从……以来(直到现在)”。如:
  He has been away from home since 1973. 他自从1973年就离开了家乡。
  We have known 2 each other since ten years ago. 我们十年前就认识了。
  注意:for和since都常与完成时连用,但for接时间段,since接时间点。如for two hours(持续)两小时;since last week从上周直到现在。
  四、before, by, till, until
  (A) before指“在……之前”,与after相对。如:
  Please come before ten o’clock. 请10点以前来。
  (B) by指“不迟于,到……时为止,在……以前”。如:
  We had learned 3 over 1000 words by the end of last term. 到上学期末为止,我们已经学了1000多个单词了。
  We will have learned 2000 English words by the end of this term. 到本学期结束前,我们将学了两千英语单词了。
  注:by后接过去时间,常与过去完成时连用;by后接将来时间,常与将来完成时连用。
  (C) till (until) “直到……为止”。如:
  You must wait for him till tomorrow. 你必须一直等到他明天。
  注:在肯定句中,till/until必须与延续动词连用;在否定句中,till/until常与非延续性动词连用。如I didn’t go to bed until 12 o’clock. 直到12点我才睡。
  五、after, in, within 4
  (A) after表示“在……之后”,是before的反义词。如:
  He got a cancer and died after a year. 他患了癌症,一年后去世了。
  The meeting will end after 3:00pm. 会议将在下午三点后结束。
  (B) within“在……时间之内”。如:
  I can finish it within an hour. 我不需一小时就可把它做完。
  注:after与in都可表示“在……之后”,但after后可跟时间段,也可跟时间点;而in后必须跟时间段。after既可用于将来时,也可用于过去时,而in只能用于将来时。
  I’ll arrive in an hour. 我一小时后到达。

n.炮弹,射击,射手;v.射击,发出,发芽;vbl.射击,发出,发芽
  • He shot a wild duck.他射中一只野鸭。
  • All the children shot out their hands for the money.所有的孩子突然伸出手来要钱。
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。
adj.有学问的,博学的;learn的过去式和过去分词
  • He went into a rage when he learned about it.他听到这事后勃然大怒。
  • In this little village,he passed for a learned man.在这个小村子里,他被视为有学问的人。
n.内部,里头;adv.在内部,在内心里;prep.在…之内
  • The work must be done within the given time.这个工作必须在规定的时间内完成。
  • Within two weeks,she gained five pounds in weight.两周内她的体重增加了5磅。
标签: 介词
学英语单词
-wick
abite
aequator lentis
anti-torque rotor
articles of consumption
automotive exhaust
balasees
Belarusan
black-boards
BOS (back-out system)
business-process reengineering (bpr)
bustler
cartbote
casade amplification
cervical membrane
clearness number
climacteric melancholia
collateral value
compacting press
complete formula feed
daequan
david-and-goliath
die for pipe thread
differential-pressure cell
e.&e.o.
EAI, E.A.I.
effective core diameter
elementary cooperative
existentialisms
f.i.l.o.
factor antithesis
fairship
first-in first-out list
fix-point estimation
forward line of troops (flot)
gempylid
glue applicator
graphic optimization
grave-dressing phase
Homo erectus lantianensis
ignis St.Ignatii
jabusch
leaf spot of tea
lifting expenses
linearity coil
LP piston
monkeywrenches
Morshanskiy Rayon
MOSRAM MOS (random access memory)
Moulay-Idriss
Multilyte
Napoleonian
narcinid
national dose
negative cut-off grid voltage
Neo Latin
nodular(melanoma)
normal mode
octosyllabic
oligodendroglial cell
on-line document retrieval system
Onchocerca gibsoni
over-dimensioned
paishi granules,paishi keli
Philadelphia chromosome,Ph chromosome
plicae sigmoidea
polyethersulfones
ponkal
privilege of parliament
proportion of mixture
protein energy malnutrition
puts through
qualitative histology
quick operation blower valve
quinine carbolate
random mating
relative humidities
reloading procedure
resolution of amino acld
riveting joint
rodnt ulcer
sarellas
SC (semi-conductor)
semanotus bifasciatus sinonauster
semifactual
Shinowara-Jones-Reinhart method
sliver lay-in circular knitting machine
sodium morrhuate
Spanish omelets
stack friction
steel horseboats
sunken meadow
tirupatis
Turpinia
venosity
vigorous economic growth
werewolfish
whip apparatus
wick lubricator
Wilks' symptom complex
X-ray photograph, X-ray picture
zig-zag fold