David did his homework just now.改为否定句 (写理由)
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David did his homework just now.改为否定句 (写理由)
David did not do his homework just now 一般陈述句 改为否定句 助动词+ not 就行了 比如 you系动词的 就是系动词+not is not ,are not 没有系动词的 就是助动词do / did + not
再问: 答案是didn't do 吧,你说的不大清楚,明天要交滴,再清楚点la~
再答: didn't do 就是 did not do 的缩写啊 我给你简单列一下 1:句中有be动词时,在be动词后not。如:I am a student。(改为否定句) I am not a student。 2:如果句中没有be动词,找主语,如果主语是第三人称单数,在主语后加doesn't。如果主语不是第三人称单数,在主语后加don't。如:She has a book。(改为否定句 She doesn't have a book。 (注意:改否定句,句中无be动词,有have时。如果主语为第一人称,如 I We 等 have改否定句后还是have。如果主语是第三人称单数,改否定句后,has变have。看例子2. 第三人称单数如:she he 等等 3:句中有can ,may 在主语后直接加not。 当然 你还要注意时态的问题 过去式 要用 was/ were/did +not
再问: 答案是didn't do 吧,你说的不大清楚,明天要交滴,再清楚点la~
再答: didn't do 就是 did not do 的缩写啊 我给你简单列一下 1:句中有be动词时,在be动词后not。如:I am a student。(改为否定句) I am not a student。 2:如果句中没有be动词,找主语,如果主语是第三人称单数,在主语后加doesn't。如果主语不是第三人称单数,在主语后加don't。如:She has a book。(改为否定句 She doesn't have a book。 (注意:改否定句,句中无be动词,有have时。如果主语为第一人称,如 I We 等 have改否定句后还是have。如果主语是第三人称单数,改否定句后,has变have。看例子2. 第三人称单数如:she he 等等 3:句中有can ,may 在主语后直接加not。 当然 你还要注意时态的问题 过去式 要用 was/ were/did +not
David did his homework just now.改为否定句 (写理由)
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