might 与 could区别,

might 与 could区别,

题目
might 与 could区别,
答案
主要区别如下:
1.用于疑问句表示请求时,一般只用Could,且可用于各人称.如:
Could you help me explain the difference between "might" and "could"?
Could I use your mobile phone a little while?
上句可用May代替:May I use your mobile phone a little while?
用Might也是可以的,但不常见.
2.could和might都可用在条件句中,表示假想的情况.表示“本来会、本来可以/能够”.例如:
If you tried you could/might do the work better.如果你试试的话,准能把那项工作干得更好.
You could have met her if you had gone that way.如果你走那条路的话,你准能遇见她.
此句中的could如改成might则表示:……,你也许能见到他.
They could/might have worked it out if they had asked me for help.如果他们来向我求助的话,他们本能够做出来的.
He could/might have give the answer,but he refused to.他本来能够回答的,但他拒绝这么做.
You were stupid to go skiing there — you could have broken your leg.你真笨,竟会到那地方滑雪.你本来会摔断腿的.
上面的例句中用might则因其语气较轻而语意效果不甚理想.
在此场合,could和might的区别是could较might的可能性强.
3.couldn't be + 比较级句型不能用might代替.如:
Their lifestyles couldn't be more different.他们的生活方式极为不同.
4.could和might都可用在表示“结果”的状语从句中,同样,could语气较重些.例如:
He expressed his ideas clearly so that the average person might understand.他把他的意思清楚地表达出来,以便一般人能听明白.
5.might as well表示“不妨、可以、倒不如”,此时的might是不能用could代替的.例如:
We might as well look for some food now.现在我们不妨找些吃的东西.
I expect I might as well be going.我希望我可以走了.
Since it’s a fine day we might as well walk.既然是一个晴朗的天,我们不妨步行.
We might as well have gone home as you suggested.我们还不如按你建议的回家去呢.
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