英语 情态动词 (9 19:11:40) doesn’t dare to…dare           与              daren’t…doesdares not…dare

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英语 情态动词 (9 19:11:40) doesn’t dare to…dare           与              daren’t…doesdares not…dare
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英语 情态动词 (9 19:11:40) doesn’t dare to…dare           与              daren’t…doesdares not…dare
英语 情态动词 (9 19:11:40)
 
doesn’t dare to…dare           与              daren’t…does
dares not…dare               与          daren’t…dare

英语 情态动词 (9 19:11:40) doesn’t dare to…dare           与              daren’t…doesdares not…dare
dare作为特殊情态动词,常用于疑问句和否定句,无三单和过去式变化.后必接省略to的普通实意动词不定式构成合成谓语.即形成:Dare you(he)do ...?
he(you) daren't do...
dare作为普通实意动词,常用于肯定句.此时不能再提前构成疑问或加not构成否定,有三单和过去时的变化.后加to do做宾语.其疑问和否定要借助于do.即形成:he dares to do...
I dare to do...
Do you dare to do...?
Does he dare to do...?
he doesn't dare to do...
I don't dare to do...