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1 # 博學圓月0u
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2 # 老崔談歷史
一般疑問句:Does she have to practice speaking Chinese every day.(has體現三單，藉助助動詞does)否定回答:No, she doesn"t.
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3 # 使用者1239889685252696
He likes skating and swimming.
他喜歡滑冰和游泳。
否定句：
He doesn't like skating and swimming.
他不喜歡滑冰和游泳。
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4 # 使用者7009790187174
把She is swimming now.改為否定句就是：
She is not swimming now.
She is swimmimg now這個句子是一個主謂結構的簡單句。
she是人稱代詞主格形式作主語。
is 是助動詞，和後面的現在分詞swimming構成現在進行時。
swimming是現在分詞，和前面的助動詞is構成現在進行時。
is swimming是謂語部分。
now是副詞作時間狀語。
把She is swimming now改為否定句，這個句子中的主語和時間狀語都不能否定，只能否定謂語部分，可直接在助動詞的後面加not即可。如：
He is running.
改為否定句是：
He is not running.
They are playing basketball.
改為否定句是：
They are not playing basketball.
改為否定句:I 'm not swimming now.
這是現在正在進行時的否定形式。現在正在進行時的構成是:
主語+be 動詞+動詞的ing形式
它的否定形式是直接在be動詞後加not,而且通常be 動詞和not要用縮寫形式。
Is not縮寫形式是Isn't.
are not縮寫形式是 aren't
was not 縮寫形式是wasn't
Were not 縮寫形式是Were n 't
am not的縮寫形式是I'm not