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2019-9-29 20:45 |
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发表于 2019-8-24 16:32:59
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本帖最后由 张琴琴 于 2019-8-24 16:52 编辑 0 O5 d- T2 @: a! w
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这里的show属于朗文词典中的这条用法：
! l; A1 ?4 D. K9 Jbe shown to be/do something. ~% d, k) |" I
The campaign has been shown to be a waste of money.2 u0 | x; z0 ~6 y5 {
The new treatment has been shown to reduce the number of deaths.! B I9 A9 |2 A; P/ ?, t! F4 }0 Q
3 G$ i4 y( O5 c T4 F而这里后接的不定式可以等价于从句，但从句中的谓语却要使用相应的时态或情态动词，如：" |5 G7 @. {5 k, G- W% I2 d- l5 u; g
It has been shown that the campaign IS a waste of money.
$ Q8 A# e! c. |" w- j+ I+ }It has been shown that the new treatment CAN reduce the number of deaths.
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9 T0 H: m1 l& j* x9 h5 e回到原句中，我们用从句表达可以是（注意以下不同时态所表达的时间含义不同)：
8 b% W, A4 l6 C; lIt was shown that teachers had utilzied the ideas, but eventually they reverted to previous practices.) S9 W* J3 l* [2 g9 q) D
It was shown that teachers had been utilizing the ideas, but eventually they reverted to previous practices.* R" h$ `- e; Z2 S
It was shown that teachers were utilizing the ideas, but eventually they reverted to previous practices.& Y; ~# ~ i$ b9 O
但却不说
/ E7 T+ C7 A% D$ L' D& t6 G& q$ a+ E9 sIt was shown that teachers utilized the ideas, but eventually they reverted to previous practices.
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所以原句
; F1 ]& q7 g" N5 hTeachers were shown to be utilizing/to have utilized 都是说得通的，却不能使用to utilize
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