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标题: be able to do 和can---大全708 [打印本页]

作者: 月之茧 时间: 2008-8-15 23:04
标题: be able to do 和can---大全708
be able to do 是不是没有can简介啊？
大全708：

1.
The Coast guard is conducting
tests to see whether pigeons can be trained to help find survivors of
wrecks at sea.

(A) to see whether
pigeons can be trained to help find

(B) to see whether
pigeons can be trained as help to find

(D) that see if
pigeons are able to be trained in helping to find（A）

(E) that see
whether pigeons are able to be trained for help in finding

答案为A

答案没疑问，但是解释中说DE都该把be able to换成can，目前还没有发现其他题有这种说法。
请教~有没有相关的例子~~~~

作者: AlienX 时间: 2008-8-15 23:10
umm..."can"會比"be able to" concise.
好像有類似的題
可是不改也可以, grammar&meaning上都okay, 只是改會比較concise

作者: skyyuki11 时间: 2008-8-15 23:14

be able to 表示所具备的才能，技能，可以说pigeons are able to help find survivors of wrecks at sea, 但是如果说pigeons 具备可以被人类所训练的能力，不是讲不通了吗，很别扭。

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