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使用虚拟条件句时要注意的几点难点突破
版块:教育培训   类型:普通   作者:clcfone   查看:124   回复:0   获赞:0   时间:2023-02-18 17:03:39

使用虚拟条件句时要注意的几点难点突破
1.当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时,被称为“错综时间条件句”,动词的形式要根据它所表示的时间作出相应的调整。如: 
If you had followed my advice just now, you would be better now. 
如果你刚才听了我的劝告,你现在就会好些了。
If you had studied hard before, you would be a college student now, and you would graduate from a college in four years’ time. 如果你以前努力学习的话,你现在是大学生了,四年后你就可以从一所大学毕业了。
2.if 省略句 
在条件句中可省略if, 把were, had, should提到句首 , 变为倒装句式。如: 
If I were at school again, I would study harder. 
→ Were I at school again, I would study harder. 
如果我再在学校,我会更加努力学习。
If you had come earlier, you would catch the bus. 
→ Had you come earlier, you would catch the bus. 

要是你来的再早点,你可能就赶上公交了。

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If it should rain tomorrow, we would not go climbing. 
→ Should it rain tomorrow, we would not go climbing. 
要是明天下雨,我们就不去爬山了。
注意:若省略的条件句中的谓语动词是否定形式时,不能用动词的缩略形式。如:我们可以说:Were it not for the expense, I would go abroad now. 但不能说:Weren't it for the expense, I would go abroad now. 
3.用介词短语代替条件状语从句。常用的介词有with, without, but for。如: 
What would you do with a million dollars? ( = if you had a million dollars) 
We couldn't have finished the work ahead of time without your help. ( = if we hadn't got your help) 
4.含蓄条件句 
有时为了表达的需要,在虚拟语气中并不总是出现if引导的条件句,而通过其他手段来代替条件句。 
I was ill that day. Otherwise, I would have taken part in the sports meet. (副词) 
He telephoned to inform me of your birthday, or I would have known nothing about it. (连词) 
A man who stopped drinking water would be dead in about seven days. (定语从句) 
I might have given you more help, but I was too busy. (连词) 
Everything taken into consideration, they would have raiser their output quickly. (独立主格结构) 

1.Many a boy and (many a) girl ________ the same mistake.
A.is made              B.are made C.has made              D.have made
2.A number of experts ________ today that the number of acupuncture points ________ the same as the   number of days in a year.
A. claims; are          B. claim; is C. claims; is          D. claim; are
3.He is the only one of the students _________ able to speak both English and Japanese well.
A. who is        B. who are        C. that is        D. that are
4.The number of traffic accidents that _____ in developing countries _________ increasing.
A. happen; is             B. happen ; is C. happens; are             D. happen; are
2.B【解析】试题分析:考查主谓一致。句意:几个专家今天声名针灸的数量与一年的天数相同。第一空的主语是experts,;第二空的主语是the number,可知选B项。考点:考查主谓一致
3.A【解析】试题分析:此处先行词是the only one,关系代词who指代先行词在句中作主语,故谓语动词要和the only one保持一致,使用单数形式。故选A.考点:考查主谓一致。
4.A【解析】试题分析:考查主谓一致。本句中定语从句that happen in developing countries修饰先行词traffic accidents,因为该先行词是复数名词,所以定语从句中使用复数谓语动词。第二空是主句的谓语动词,本句的主语是the number,该短语做主语的时候,谓语动词使用单数形式。句意:在发展中国家中发生的交通事故的数量正在上升。故A正确。考点:考查主谓一致

 
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