you can never imagine what great difficulty l have had( )him to stop smoking.a.persuadedb.to persuade c.persuade d.persuading

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youcanneverimaginewhatgreatdifficultylhavehad()himtostopsmoking.a.persuadedb.topersuadec.persuaded.p

you can never imagine what great difficulty l have had( )him to stop smoking.a.persuadedb.to persuade c.persuade d.persuading
you can never imagine what great difficulty l have had( )him to stop smoking.a.persuaded
b.to persuade c.persuade d.persuading

you can never imagine what great difficulty l have had( )him to stop smoking.a.persuadedb.to persuade c.persuade d.persuading
to persuade 表示目的~
为了说服他戒烟,你根本想象不出来我们经历了什么困难

what mean?

b

D
have difficulty (in) doing sth.
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先看句子结构,应该是you can never imagine sth. 然后是 I have had great difficulty(in)doing
sth. 第一个have是完成时态助动词,had是实意动词,表示“有”。所以在这里,就是persuading him to stop smoking.
所以选d
这种句子一定不能看到had 或者have就觉得是完成时,冲...

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先看句子结构,应该是you can never imagine sth. 然后是 I have had great difficulty(in)doing
sth. 第一个have是完成时态助动词,had是实意动词,表示“有”。所以在这里,就是persuading him to stop smoking.
所以选d
这种句子一定不能看到had 或者have就觉得是完成时,冲动选了a,你要看清楚它的实质结构。

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满意答案是错的,下面几个选D项的解释。
have difficulty( in )doing sth.是固定结构,表示做某事有困难。其中in可以省略