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didn't do sth and haven't do sth
Are both structures right? Is there such"haven't did sth”？
2015年4月1日 08:59
回答 · 2
3
No, there isn't. This form doesn't exist. You're confusing two tenses.
The past simple is 'I didn't do that'.
The present perfect is 'I haven't done that'.
2015年4月1日
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