It might have saved me some trouble the schedule．( )A．did I knowB．have I knownC．do I knowD．had I known 题目和参考答案——青夏教育精英家教网—

题目内容

4．It might have saved me some trouble __________ the schedule．（　　）

A．

did I know

B．

have I known

C．

do I know

D．

had I known

分析它可能已省了我一些麻烦，要是我知道这个计划的话．

解答根据主句谓语动词might have done，可以知道是对过去情况的假设，那么if从句中谓语动词则需用had done来表示对过去情况的假设，从而使得主从句保持一致．当虚拟条件句的谓语动词是助动词had时，if可以省略，从而将had置于句首，句子倒装．所以D选项正确．

点评此题考查虚拟语气中if省略倒装的现象．当虚拟条件句的谓语动词含有were，should（助动词），had（助动词）时，if可以省略，从而将were，should（助动词），had（助动词）置于句首，句子倒装．解此类题时，要根据语境、时间状语或主从句中的谓语动词形式，来判断是对过去、现在、将来三个时间里，哪一个时间的虚拟假设，再做题．

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First, there will be a full moon. That's always fun, but this one will be a little more special. It's known as a “snow moon.” The name comes from the fact that the heaviest snows usually fall during February, according to the Old Farmer's Almanac.

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In North America, the eclipse begins at 5:34 p.m ET and ends at 9:53 p.m. ET, according to astronomy website EarthSky. The eclipse will be at its height around 7:44 p.m.ET.

If that's still not enough, let's throw in a comet（彗星）to the night's festivities.

Comet 45P (it has a much longer name, but we won't burden you with it here) is visible as it flies by Earth. The comet will get within 7.4 million miles of the planet as it makes its closest approach this weekend, according to Universe Today.

Comet 45P will be the most visible a couple of hours after the eclipse, so look to the skies again around 3 a.m.ET Saturday and find the greenish-blue light with a tail.

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I am always nervous when I get an email from my parents with "FYI(For Your Information)". My parents are in their late 70s, and while they are quite healthy for their ages, I worry about what messages they are going to give me.

I got such an email in September from my father. He sent an email from my cousin who told that her father, my uncle Reese, had passed away. The news made my mind go blank though I have met him less than a dozen times in my life, because Reese was the first of my parent’s siblings(兄弟姐妹) to die, and I was simply not ready for that.

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Reese’s memorial service was small with only family and perhaps a dozen of his friends. The funeral was attended by an even smaller number, and then, the family gathered at a nearby bar to look at old photographs found among Reese’s possessions when he died.

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