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had done的否定
had
done
是什么时态
答:
动词think,want,hope,mean,plan,intend等用过去完成时来表示过去未曾实现的想法,希望,打算或意图等。还可用在hardly...than?,lt was the fir...than...,lt was the first (second,etc) 。结构 1、主语+
had
+动词过去分词 2、肯定句:主语+had+动词过去分词+其他 3、
否定
句:主语+had+...
can't
have
done和couldn‘t have
done 的
区别
答:
can't
have
done
(不可能做过)是must have done(一定做过)
的否定
形式。 couldn't have done(可能没做过)是may have done(有可能做过)的否定形式。 一般认为can't have done有80%以上的把握.而couldn't have done则委婉的多,只有50%左右的把握. must do /can't do一定,肯定80%把握。 may/could do/...
be
done的
被动语态怎么写?
答:
7、现在完成时:
have
/has + been +
done
Someone has told me the sports meeting might be put off.→I have been told the sports meeting might be put off.有人告诉我运动会可能会被延迟。8、过去完成时:
had
+ been + done When I got to the theatre, I found they had already ...
had
better的用法
答:
4.
had
better +
have
+ V-ed可表示"本该做而没有做的事"。如:You had better have
done
it .如果你把那件事办妥就好了。(但实际上你没有那样做)You had better have stayed with us .要是当时你和我们呆在一起多好啊。(实际上没有)四、had better
的否定
式。如:常用的否定形式是将...
had
better的固定搭配是什么?
答:
其意为“最好”、“应该”,后接动词原形,与情态动词should用法相似,其中的
had
通常缩略为'd:You'd better get some sleep.你最好去睡一会儿。We had better go before it rains. 我们最好在下雨前就去。2. had better 如何构成
否定
式和疑问式 构成否定式时,通常将not置于had better之后(而...
had
better的用法,详细说明一下,他的疑问句形式是怎样的呢?一般疑问...
答:
2.
had
better如何构成
否定
式和疑问式 构成否定式时,通常将not置于had better之后 (而不是had之后);而构成疑问式时,则通常将had(而不是had better)置于主语之前。 如:I’d better not disturb him.我最好别去打扰他。 What had we better
do
?我们最好怎么办? 【注】在否定疑问句或反意疑问句中可将not与...
be动词的用法
答:
3、当“be”要在祈使句中出现时,陈述句可借助助动词“do”,
否定
句必须在前加上助动词“don't”。4、“Be”有两种缩写法,但“am + not”的缩写法只有一个。5、“Be + 现在分词”以组成进行式时态(Continuous Tenses)。6、被动语态的基本结构为be+
done
(Be动词+动词过去分词)。7、一般现在时...
过去完成时的主动语态变被动语态怎么变 最好有例句
答:
1、过去完成时主动语态 I
had
given him three books.S主语+had+V过去分词+其他成分 2、转换成被动语态 Three books had been given to him by me.宾语提前做主语+had+been+V过去分词。3、过去完成时的被动语态有以下三种形式:(1)肯定结构:主语+ had been
done
+其他成分 (2)
否定
结构:主语...
have
当有讲时一般过去时的疑问句,
否定
句的变法?
答:
The soldier
had
him stand with his back to his father.(SBⅠL17)〔注〕:
否定
结构表示“不能让…”或“从未有人…”.We won't
have
you blame it on others.She had never had anybody speak to her that way before.(2)现在分词作宾语补足语(have sb.(sth.)doing),表示让(使)...
英语中有哪些最常见的时态?
答:
基本结构:
have
/has +
done
否定
形式:have/has + not +done.一般疑问句:have或has。六、过去完成时:概念:以过去某个时间为标准,在此以前发生的动作或行为,或在过去某动作之前完成的行为,即“过去的过去”。时间状语:before, by the end of last year(term, month…),etc.基本结构:
had
...
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