关于estimate的用法？

juan

Paleontologists believe that fragments of a primate jawbone unearthed in Burma and estimated at 40 to 44 million years old provide evidence of a crucial step along the evolutionary path that led to human beings. Dfficeffice" />

(A) at 40 to 44 million years old provide evidence of

(B) as being 40 to 44 million years old provides evidence of

(C) that it is 40 to 44 million years old provides evidence of what was

(D) to be 40 to 44 million years old provide evidence of

(E) as 40 to 44 million years old provides evidence of what was

答案是D，我选对了。但是我不太清楚在什么情况下用estimate...at,什么情况下用estimate to be....？有人能帮忙解释一下吗？

谢谢了。

ecsniffer

不懂


顶


这难道又是ets的偏好？

freedownload

能告诉我这道题在新东方的语法讲义的哪一套吗，我记得我做过笔记在旁边，但现在找不到在哪里。

juan

在新东方讲义的第5套的第14题。等着看你的笔记哦。

freedownload

我的笔记记录的是：estimate有两种用法：


1，be estimated at+多少钱（估计多少钱的意思）


2，be estimated to be sth.

juan

怎么和我的新东方笔记一模一样啊？你是不是也是在Toronto的新东方上过的呀？我觉得新东方的笔记很含糊而且太绝对了。

weiyu

    

Estimatefficeffice" />

Verb

GRE/GMAT/LSAT CR, RC

Estimate that…

Estimate sth

The projected total of corporate contracts with minority businesses for the early 1980’s is estimated to be over 53 billion per year with no letup anticipated in the next decade.

a lizard was recently found that is estimated to be 340 million years old.

M-W

ESTIMATE implies a judgment, considered or casual, that precedes or takes the place of actual measuring or counting or testing out **estimated the crowd at two hundred**.

是否可以说estimate to be+时间；estimate at+数量?

Estimate还可以作名词

juan

我看过这样一个例子：I estimated his age at 40.我觉得是不是用被动时，就是be estimated to be...用主动态时，就是estimate at呀？

tianwan

fficeffice" />

estimated to be, estimated at:

The age of that fragments of a primate jawbone is estimated at/to be 40 to 44 million years.     Old

That fragments of a primate jawbone is estimated to be 40 to 44 million years old.

    

His age is 35. -> His age is estimated at/to be 35. / I estimate his age at/to be 35.

He is 35 (years old). -> He is estimated to be 35 (years old).

    

to be更加安全，任何时候都可以用。Estimate是典型的带不定式作宾语补语的动词。

Estimate sth at sth是惯用法。只在特定的场合下使用。

    

mariezhu

呵呵，我在新东方上课是老师讲的也是当表示价格时是be estimated at, 其它的大多数都是be estimated to be


可能有点太绝对，不过可以借鉴。我记得我上法语课时，老师第一节课就说法语有无数规则，但是规则也总有例外。：）