高一英語(yǔ):知識(shí)點(diǎn)總結(jié)Unit3-4(18)

2016-11-19 21:38:56 來(lái)源:高考網(wǎng)

   【考例】 The American Civil War lasted four years the North won in the end.

  A. after B. before C. when D. then

  [考查目標(biāo)] 時(shí)間狀語(yǔ)從句的引導(dǎo)詞選擇。

  [答案與解析]B before 表示“直到……”。

  4. Tree after tree went down, cut down by the water, which must have been three meters deep. 洪水想必深達(dá)三米,樹一棵接一棵地倒了,被洪水沖斷了。

  該句中的must have been表示推測(cè)。例如:You look so tired. You must have stayed up last night.

  情態(tài)動(dòng)詞may,might,most.can,could常用來(lái)表示推測(cè)。may,might,must多用在肯定句中,can,could多用在否定句和疑問(wèn)句中。may,might,must,can,could后接動(dòng)詞原形表示對(duì)現(xiàn)在的推測(cè);may,might,must,can,could后接have done。表示對(duì)過(guò)去的推測(cè)。例如:

  You may be a professor. / She must have met a fairy.

  【考例】This cake is very sweet. You ____ a lot of sugar in it.

  A. should put B. could have put

  C. might put D. must have put

  [考查目標(biāo)] 情態(tài)動(dòng)詞表示推測(cè)。

  [答案與解析] D 前文說(shuō)蛋糕很甜,由此可知一定是糖

  放多了。對(duì)于過(guò)去的動(dòng)作的推測(cè)應(yīng)使用have done的

  結(jié)構(gòu),所以應(yīng)在B、D之間做選擇,又因?yàn)閏ould have

  done表示本可以做而沒有做,所以選擇D。

  5. ... she heard a loud noise,which grew to a terrible roar. ……她聽見了很響的聲音,接著就變成了可怕的隆隆轟鳴聲。

  該句中的which引導(dǎo)非限制性定語(yǔ)從句。例如:He bought some reference books, which were all about science. 他買了許多的參考資料.都是有關(guān)理科的。

  which 作為關(guān)系代詞.既可以引導(dǎo)限制性定語(yǔ)從句,也可以引導(dǎo)非限制性定語(yǔ)從句。例如:The train which left for Beijing pulled in on time. 前往北京的火車按時(shí)進(jìn)站了。His dog, which was now very old, became ill and died.他的狗,現(xiàn)在老了,生病死了。

  (責(zé)任編輯:康彥林)

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