高中英语的语法填空练习,最好说明是用了什么语法和是根据什么来得出答案的The exact number of gorillas living in Africa today ___________ (not, know), but it is certain that a number of them ___________ (die) out.
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![高中英语的语法填空练习,最好说明是用了什么语法和是根据什么来得出答案的The exact number of gorillas living in Africa today ___________ (not, know), but it is certain that a number of them ___________ (die) out.](/uploads/image/z/5616059-59-9.jpg?t=%E9%AB%98%E4%B8%AD%E8%8B%B1%E8%AF%AD%E7%9A%84%E8%AF%AD%E6%B3%95%E5%A1%AB%E7%A9%BA%E7%BB%83%E4%B9%A0%2C%E6%9C%80%E5%A5%BD%E8%AF%B4%E6%98%8E%E6%98%AF%E7%94%A8%E4%BA%86%E4%BB%80%E4%B9%88%E8%AF%AD%E6%B3%95%E5%92%8C%E6%98%AF%E6%A0%B9%E6%8D%AE%E4%BB%80%E4%B9%88%E6%9D%A5%E5%BE%97%E5%87%BA%E7%AD%94%E6%A1%88%E7%9A%84The+exact+number+of+gorillas+living+in+Africa+today+___________+%28not%2C+know%29%2C+but+it+is+++++certain+that+a+number+of+them+___________+%28die%29+out.)
高中英语的语法填空练习,最好说明是用了什么语法和是根据什么来得出答案的The exact number of gorillas living in Africa today ___________ (not, know), but it is certain that a number of them ___________ (die) out.
高中英语的语法填空练习,最好说明是用了什么语法和是根据什么来得出答案的
The exact number of gorillas living in Africa today ___________ (not, know), but it is
certain that a number of them ___________ (die) out.
高中英语的语法填空练习,最好说明是用了什么语法和是根据什么来得出答案的The exact number of gorillas living in Africa today ___________ (not, know), but it is certain that a number of them ___________ (die) out.
The exact number of gorillas living in Africa today is not known,but it is certain that a number of them are dying out.
今天,生活在非洲的大猩猩确切数量还不知道,但可以确定的是,很多大猩猩正在灭绝.
填 is not known 和 are dying
the number of 表示.的数目,.的数量,为单数
a number of 一些;许多 是复数
句中有个today,那么第一个空就填doesn't be known,因为the number就用单数形式,故用doesn't,然后数据应该是被知道,所以用被动语态。第二个空填die 或have been died,同样,a number of 要用复数形式,故用原型或在完成时中用have的形式。 求采纳哈~~~打字很辛苦呢...
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句中有个today,那么第一个空就填doesn't be known,因为the number就用单数形式,故用doesn't,然后数据应该是被知道,所以用被动语态。第二个空填die 或have been died,同样,a number of 要用复数形式,故用原型或在完成时中用have的形式。 求采纳哈~~~打字很辛苦呢
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number是句中主语,谓语要看动词。动词是know,可以判断出know与number是被动关系。所以用到了know的被动式,be known.
而根据句意,说的是大猩猩的现状,所以,用的是现在进行时表示一直进行或正在进行的动作。
isn't known 前一句有today,证明是一般现在时,主语是物所以用被动形式。
are dying, it is说明了时态应该是现在的,但是是正在发生的动作,所以用现在进行时。、