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have been done表示什么
英语语法,
什么
时候动词用原形?
答:
有以下十种情况使用动词原形:1.与助动词或情态动词
do
,does,did,shall,will,should,would,may,might,
have
to,must,need,ought to等一起构成谓语的动词时,要用原形.如:
Do
you like English?你喜欢英语吗?May I use your telephone?我可以用你的电话吗?We must study hard and make progress ...
...He
has
been
dead for 5 years.has
done是
现在完成时,为什么有个...
答:
dead是形容词。He is dead.
是表示
状态。 He
has
been
是现在完成时。不是被动。主系表结构。
求关于
be
to
do
sth的用法和意思
答:
1、
表示
安排,意向或目的。例句:The U. S. President is to visit China.美国总统将访问中国。2、(表义务)应该做……,必须做……例句:You are to
be
back by six o'clock.你要在6点之前回来 3、(表可能)会做……例句:How am I to know what
has
become of him?我怎么知道他的遭遇...
must
have
done
和must have
been
的区别
答:
must
表示
必须. 一定. must
have
done
.表示对过去发生的事非常肯定的猜测.而must have
been
是对某物已经处于某状态或已经到达某地点的肯定猜测.
...
done
,
having
been
done,having done都在
什么
情况下出现和使用...
答:
being done ,
have
been
done,have done这三者都有动词done且有三种形式,估计这个把你弄迷糊了。第一个being
done是
被动语态的正常时态下的现在分词形式,
表示
“正在被...”的一种状态,可以在一个句子中担任各种成分。比如I'm afraid of (being found) telling a lie.我害怕被发现说谎。括号...
having
done
和to
have
done的区别
答:
having
done
: 完成式;现在分词的完成式;现在分词的完成形式;强调时间 完成式 由于现在分词和动名词都是在动词之后加-ing构成的,所以两者的被动式(being done)、完成式(having done)及完成被动式(having
been
done)是相同的。 现在分词的完成式 现在分词的完成式(having done):
表示
分词 的动作发生...
be
having
done是什么
时态
答:
have
done
和have
been
done都
表示
的是现在完成时,
having
done和having been done都是动词ing的完成形式,在句子中作状语,起到补充说明的作用。这里要注意的是,having所接的动词发生的时间在主句中谓语动词发生的时间之前。比如:
Having
driven all day,we were so tired.这个例子中,having driven表示...
谁能告诉我英语的时态
什么
的,比如说过去完成时
had
+
done
答:
5、现在完成时的被动语态:
have
/
has
+
been
+ 动词的过去分词
done
Some new factories have been built in the city since last year.Your watch has been mended already.6、过去完成时的被动语态:
had
+ been + 动词的过去分词done He said that some new factories had been built in the ...
英语被动语态的形式
是什么
答:
1、一般现在时:am/is/are+given 2、一般过去时:was/were+given 3、一般将来时:will/shall be+given 4、过去将来时:would be+given 5、现在进行时:am/is/are being+given 6、过去进行时:was/were being+given 7、现在完成时:
has
/
have
been
+given 8、过去完成时:
had
been+given ...
has
been
believed to
have
been与is believed to have been的区别是...
答:
1. "
Has
been
believed to
have
been":这是现在完成时的被动语态,强调的是在过去某个不确定的时间点发生的动作对现在产生的影响或结果。例如:"He
has
been believed to have been the best player in the team."(他一直被认为是队里最好的球员。)2. "Is believed to have been":这是...
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