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首頁(yè) > 教案下載 > 英語(yǔ)教案 > 高中英語(yǔ)教案 > 高二英語(yǔ)教案 > Unit 4  Astronomy:The science of the stars

Unit 4  Astronomy:The science of the stars

發(fā)布時(shí)間:2019-03-22

Unit 4  Astronomy:The science of the stars


at a time一次
at times 有時(shí)
at the same time同時(shí);然而;可是
from time to time不時(shí);偶爾
in no time立刻;馬上
take ones time不急,慢慢來(lái)
time and time again一次又一次;一再
高手過(guò)招
單項(xiàng)填空
—i was disappointed in         time when i didn’t pass the examinations.
—don’t be so discouraged. you’ll be successful in
             time.                                     (•12•河南平頂山檢測(cè))
a./; /            b. a; a              c./; a                  d. a; /
解析:選d。句意為:——我沒(méi)通過(guò)考試那段時(shí)間我很失望。——?jiǎng)e灰心。你遲早會(huì)成功的。第一個(gè)空考查的是when 引導(dǎo)的定語(yǔ)從句,表示在某段時(shí)間里,故應(yīng)用in a time。而第二個(gè)空表示“遲早”,故用in time。
10. prevent ...from
阻止;制止
the heavy rain prevented us from going there.
這場(chǎng)大雨使我們沒(méi)能到那里去。
易混辨析
prevent/stop/keep/protect
prevent, stop, keep與protect四者的常見(jiàn)結(jié)構(gòu)為:
prevent ...(from) doing sth.;stop ...(from) doing sth.;keep ...from doing sth.; 均表示“阻止……做某事”。
上述三個(gè)結(jié)構(gòu)中,在主動(dòng)語(yǔ)態(tài)中stop 與prevent后可省去from,但在被動(dòng)語(yǔ)態(tài)中不可省略; 而keep ...from ...中的from在任何情況下都不能省略。另外,
protect ...from ...表示“保護(hù)……不受……侵襲;阻擋;防御”。from后接能帶來(lái)傷害或損害的事物。
this plan will be kept from being carried out.
這個(gè)計(jì)劃將被阻止實(shí)施。
高手過(guò)招
單項(xiàng)填空
some policemen should be sent to          them         the trees.
(原創(chuàng))
a. prevent; to cut down          b. stop; cutting down
c. keep; to cut down            d. keep; cutting down
解析:選b。句意為:應(yīng)該派一些警察去阻止他們砍伐樹(shù)木。keep/prevent/stop ... from doing sth.阻止……做某事,其中keep ...from doing sth. 中的from不可省略。故選b。
11. break out
突發(fā);爆發(fā)(無(wú)被動(dòng)語(yǔ)態(tài))
trouble may break out at any moment.
災(zāi)難在任何時(shí)候都可能突然發(fā)生。
when did the war break out? 戰(zhàn)爭(zhēng)什么時(shí)候爆發(fā)的?
it was at midnight that a fire broke out.
在午夜時(shí)分發(fā)生了一起大火。
聯(lián)想拓展
break away from 脫離(政黨等);打破(陳規(guī)等)
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