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might never have done
have
done
的否定是什么?
答:
动词 + 动词完成式即“情态动词 +
have
+
done
”,表示对过去行为或动作进行推测、评论或判断。这个结构是近几年高考情态动词的重点和难点。一、在虚拟语气中的用法 1. should have done 表示“过去本应该做某事却未做。”其否定结构 shouldn't have done 表示 “过去本不该做某事却做了。”2. ...
初中英语语法之现在完成时
答:
一、基本结构:主语+
have
/
has
+动词的过去分词 ①肯定句:主语+have/has+动词的过去分词+宾语.②否定句:主语+have/has+not+动词的过去分词)+宾语.③一般疑问句:
Have
/
Has
+主语+动词的过去分词+宾语.④特殊疑问句:特殊疑问词或词组+一般疑问句(have/has+主语+过去分词(V-ed)+其他)过去分词变...
could
have
done
与could do区别
答:
could
have
done
与could do区别 因为是已经过去了的事情,所以用could,而非can;因为是完成了的事情,是完成时,所以要用have。简单地说因为是上个星期,而且是事情已完成,用过去完成时! 另一种解释:这是without引导的隐蔽形虚拟语气,和过去事实相反的,用could+现在完成时。could have done和cou...
中学英语语法
答:
D.
Had
it not been 这是一个对过去的虚拟,所以用过去完成时,去掉条件句引导词if时,过去完成时的助动词
had
要提前到句首,所以D 如果不是有他的悉心照顾与关爱,她可能永远不会从疾病中康复了。
区别could,
might
,would,should
have
done
答:
You could
have
done
better, but you were too careless (2)
might
have done:表示“本来可能……,但实际上没有发生的事情”。另外,还可以表示“本来应该或可以做某事”之意,含有轻微的责备语气。You should not swum in that sea. You might have been eaten by a shark.He might have ...
might
be
never
ending.是什麽意思
答:
语义:或许绝不会有结束。
情态动词加
have
done
表示过去 主语是单三时,have需要变为
has
吗?_百度...
答:
have
done
:用于肯定句或否定句,表示推测,意为“可能(已经)……(此时
might
可换为
may
);另外还可以表示过来可能发生的事结果未发生,意为“本来会……”(此时 might 不能换为 may)。情态动词+have done 有反意问句,但变化时不看情态动词,看这些句子的时间时态决定,看看例子吧:1,He must ...
大神求助!!英语语法题~~请详解...
答:
1 选A:此题考查的是情态动词表“推测”的用法,句意为:经理可能从未发现图书保管的错误。
might
/
may
/could/……
have
done
表示推测。might/may have done 语气较轻,指可能做过……而关于
never
的位置,在have done中一般是放在中间的。所以选might have never noticed.2.选C:此题考查usually等...
Lesson85
Never
too old to learn 活到老学到老
答:
“He must / could /
may
/
might
have
heard of it from Mary.” “他肯定/很可能/可能/兴许(没准儿)已从玛丽那儿听说此事了。”一、 “ must +have+
done
”表示对过去事情的肯定推测,译成“ 一定做过某事 ”,该结构只用于肯定句.4.would have done:想必会/肯定会做某事President Obama
has
canceled ...
下句话could
never
have
done
是虚拟语气用法吗,请详细分析一下最后这...
答:
should/would/
might
/could+do:If I were you,I would take an umbrella.如果我是你,我会带把伞。(事实:我不可能是你)2、表示与过去事实相反的情况从句:If+主语+
had
+
done
主句:主语+should/would/might/could+
have
done If I had got there earlier,I should/would have met her.如果我早...
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