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时态语态语气

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1;--Excuse me,sir,would you do me a favor? --Of course.What is it? --I___if you could tell me how to fill out this form.  A.had wondered  B.was wondering    C.would wonder  D.did wonder 2;All morning as she waited for the medical report from the doctor,her nervousness___. A.has grown  B.is growing  C.grew  D.had grown 3;I've won a holiday for tow to Florida.I___my mum. A.am taking  B.have taken  C.take  D.will take 谢谢老师,题虽然有些多但都是一个类型,句意我都懂。请老师帮助讲解一下选项尤其是判断方法,还有,最后一道题第一项和第四项有什么区别?怎么感觉两个都行。 感谢老师
解题思路: 如下
解题过程:
1;--Excuse me,sir,would you do me a favor?
--Of course.What is it?
--I___if you could tell me how to fill out this form.
 A.had wondered  B.was wondering  
 C.would wonder  D.did wonder
答案B。过去进行时表婉转语气,以示礼貌,从if从句中助动词could也可领会到。
过去进行时表婉转语气仅限用于少数动词如hope,want,wonder等,表婉转语气或礼貌请求,且较一般过去时、现在进行时和一般现在时更加婉转礼貌。上述各时态并无时间差异,只是语气婉转程度不一。
2;All morning as she waited for the medical report from the doctor,her nervousness___.
A.has grown  B.is growing  C.grew  D.had grown
答案C。该题测试一般过去时在由as引导的时间状语从句结构中的运用。分析句意可知,as在此引导时间状语从句,强调“一边……一边……”之意。主句的谓语动词与从句的谓语动词同时进行,且都发生在过去。这种情况下,as引导的主从句的谓语动词通常都用一般过去时。故选C。
3;I've won a holiday for two to Florida.I___my mum.
A.am taking  B.have taken  C.take  D.will take
答案A。通过语境,“我正要带上我妈妈”,用进行时表将来。
最终答案:略