1、I haven't finished my homework yet until now.
翻译：截止现在，我仍然没有完成我的家庭作业。
2、He hasn’t received any formal education about organic chemistry.
翻译：他从来没有接受过任何关于有机化学的专业教育。
翻译：截止现在，我仍然没有完成我的家庭作业。
2、He hasn’t received any formal education about organic chemistry.
翻译：他从来没有接受过任何关于有机化学的专业教育。
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第1个回答 2014-06-08
I haven't travelled abroad yet.
He hasn't heard from his son for a long time.
He hasn't heard from his son for a long time.
第2个回答 2014-06-08
可以不？
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