将来:     did

          if+  were to do, would+ do

              should do

注意:除了由if引导的虚拟条件句外,还有倒装条件句,即把were、had或should提前;混合时间句,虚实错综句,以及含蓄条件句,即由or, otherwise, with, without, but for来引导的。

(4)四种名词性从句:

①当表语是important, natural, necessary, possible, strange, arranged, decided, demanded, ordered, requested, suggested, surprising, a pity, no woder时,主语从句要用虚拟语气。例:

It’s important that we (should) help each other.

②动词一坚持(insist),两命令(command, order),三建议(advise, propose, suggest),四要求(ask, demand, request, require)后的宾语从句要用虚拟语气。例:

He insisted that he (should) be sent to the West.

注:insist(坚持说), suggest(暗示,表明)时,从句应用陈述语气。如:

Her pale face suggested that she was ill.

③idea, plan以及表示“坚持,命令,建议,要求”等动词的同源名词作主语时,表语从句用虚拟语气。例:

My suggestion is that we (should) hold a class meeting.

④idea, plan以及表示“坚持,命令,建议,要求”等动词的同源名词后的同位语从句要用虚拟语气。例:

The office gave an order that his soldiers fight back bravely.

巧用上下文语境。①注意上下文的信息提示:信息提示出现在前文时,可以根据前文的信息提示确定答案;信息提示出现在后文时,我们应该先把此空暂时搁置,在理解了后文的基础上,再确定答案。②通读全文,利用复现词语:完形填空试题中,一些词语会重复出现在语篇之中。词汇复现使得语篇中的句子相互衔接,从而构成一个完整的、有机的意义整体。把握这些反复出现的词语,有助于我们确定正确答案。

例1:Reading is a way of learning English without classes or a teacher. It helps develop learners’ independence. And while reading graded readers, learners don’t have to run a____ because the language is at their level.

A. dictionary       B. teacher            C. student            D. recorder

[分析]because在此引导一个原因状语从句,因为读物中使用的语言符合读者的语言水平,读者当然不必求助于词典。

例2:All of a sudden I started to feel rather__1__. She wondered why I was looking for this sort of__2___. I felt even more hopeless when she told me that it would be difficult to get a job without experience.

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