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to have done
have
to
,must ,need三者区别
答:
have
to
是不得不 是被动的 而且有一般过去时 must是必须 主动的 从内心意识到该这样做 没有时态的变化 need 是应该 可以做情态动词 也可以做一般动词 情态动词跟动词原形 一般动词 后面跟to
do
辨析be able
to
和can的区别
答:
Should be able
to
应该可以 ; 应该能够 ; 应该是可以的 be able to spare 经受得起 拓展双语例句1、
Do
what you can now or you might not be able to
do
them all.去做你现在能做的,否则你可能永远也不会开始了。2、Because all Americans should be able to
have
loved ones there ...
had
better后面要考虑
have
done
的形式吗
答:
Now you
had
better listen
to
the radio.你现在最好听收音机.You had better start tomorrow.你最好明天动身.We had better be watching the TV play.我们最好现在正在看电视剧.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)四、 had better 常用的否定形式...
“should
have
done
”可以表示对过去的推测吗?
答:
不可以的。should
have
done
是虚拟假设,不能用于推测的。只有中国有这种表达意思,说“我应该做过那件事”,其实是不太确定。如果你用should have done,那么native english speakers一听就认为有件事你应该做而没有做,不会认为你是在猜测。你想表达的是什么意思,说清楚点,比较好回答。
have
to
的用法?
答:
have
to
"不得不,必须"后接动词原形,强调没有其他的选择,迫不得已做出的选择。
过去分词表未来的被动动作或状态 能举个例子嘛 谢谢!
答:
动词不定式有三种基本形式,分别为 一般式,完成时,进行式。(1)一般式 主动式:
to
do 被动式:to be
done
(2)完成式 主动式:to
have
done 被动式:to have been done eg:This book seems【 to have been written 】by Shakespeare .这本书似乎是莎士比亚写的。解析:seem后加不定式...
to
do,doing,
done
,作定语时有何区别?
答:
有主动被动的区别 doing 一定是主动的
done
一定是被动的
to
do 看句子而定 有点麻烦哦 要看具体例子
请问不定式和
having
done
还有
to
have
done 是不是不能...
答:
没错。不定式一般在句中充当主语,宾语,表语,定语,补足语,独立成分和状语。而不定式做状语时,一般只做目的状语或结果状语,不做伴随状语。而
having
done
sth和
to
have
done sth亦是如此。因为用非谓语动词的完成形式时,一般表示其发生在谓语动作之前,而不是和谓语动词同时发生,所以也就不可能做...
...
have
hands
to
catch the ball with后面的to
do
做什么成分
答:
to
do做补足语成分to do在做状语的时候表示目的。to wake up early next morning, he set the alarm.
To
do 的被动形式是to be
done
. 完成形式是to
have
done,进行形式是to be doing.比如he seems to have finished the task.He seems to be killed last night.He seems to be waiting for ...
would
have
starved 请问是什么语法时态,为什么这么用?
答:
The three mountain climbers would
have
starved
to
death if the villagers
had
not found them lying at the bottom of the valley.这个句子的主语和状语从句全部用的是虚拟语气。意思是: 要不是村民们发现他们躺在峡谷底, 这些登山者就会被饿死。would have starved:过去将来完成时, 表示就会...
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