情态动词表推测的用法
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问题:不懂在什么情况下用这几个词must、might、could。 比如:The woman “could” be running for exercise。 The person“ must” be a girl。 He “might”be running to catch a bus。 在什么情况下用什么词?
解题思路: 如下
解题过程:
情态动词must, can, may, might, could可用来表推测,
must表示“肯定,一定”,语气较强,但只能用于肯定句中表推测、判断,
can表示“可能......吗?不可能" 语气较强,但只能用在疑问句或否定句中表推测,
may表示“很可能”
might表示“或许” 可能于肯定,否定或问句中,
could表示“可能”
情态动词表推测或判断,无论语气多么强,也不能代替事实,其可能性程度看下表:
100%fact 95%probably 60%possibly
事实 可能 可能,也许,大概
推测现在的事情用must,may,might,may not和can't+do或be
e.g.She must be at home now.
The boy may play now.
推测过去的事情用must,may,might,may not和can't+have done
e.g.She might have been ill yesterday.
He must have hold the party.
(现在)She is at home. She must be at home. She may/might/could be at home.
她在家。 她一定在家。 她也许/或许/可能在家。
( 过去) She had an apple. She must have had apple. She may/might/could
have had an apple.
她吃了个苹果。 她肯定吃一个苹果。 她也许/或许/可能吃了
一个苹果。
100% fact 50-80% impossibility 90%impossibility
(现在)She isn't at home. She may/might/not be at home. She can't be at home.
她不在家。 她可能/也许不在家。 她不可能在家。
(过去)She was not at home. She may/might not have been at home. She can't
(couldn't) have been at home.
她(那时)不在家。 她(那时)可能/也许/不在家。 她那时肯定不在家。
注意:表推测的must,may,might,may not和can't是不可以与I think...连用。因为I think...已有推测的含义,故不能连用 。
最终答案:略
解题过程:
情态动词must, can, may, might, could可用来表推测,
must表示“肯定,一定”,语气较强,但只能用于肯定句中表推测、判断,
can表示“可能......吗?不可能" 语气较强,但只能用在疑问句或否定句中表推测,
may表示“很可能”
might表示“或许” 可能于肯定,否定或问句中,
could表示“可能”
情态动词表推测或判断,无论语气多么强,也不能代替事实,其可能性程度看下表:
100%fact 95%probably 60%possibly
事实 可能 可能,也许,大概
推测现在的事情用must,may,might,may not和can't+do或be
e.g.She must be at home now.
The boy may play now.
推测过去的事情用must,may,might,may not和can't+have done
e.g.She might have been ill yesterday.
He must have hold the party.
(现在)She is at home. She must be at home. She may/might/could be at home.
她在家。 她一定在家。 她也许/或许/可能在家。
( 过去) She had an apple. She must have had apple. She may/might/could
have had an apple.
她吃了个苹果。 她肯定吃一个苹果。 她也许/或许/可能吃了
一个苹果。
100% fact 50-80% impossibility 90%impossibility
(现在)She isn't at home. She may/might/not be at home. She can't be at home.
她不在家。 她可能/也许不在家。 她不可能在家。
(过去)She was not at home. She may/might not have been at home. She can't
(couldn't) have been at home.
她(那时)不在家。 她(那时)可能/也许/不在家。 她那时肯定不在家。
注意:表推测的must,may,might,may not和can't是不可以与I think...连用。因为I think...已有推测的含义,故不能连用 。
最终答案:略