David did his homework just now.改為否定句 (寫理由)
David did his homework just now.改為否定句 (寫理由)
英語人氣:964 ℃時間:2020-03-27 14:57:28
優(yōu)質(zhì)解答
David did not do his homework just now 一般陳述句 改為否定句 助動詞+ not 就行了 比如 you系動詞的 就是系動詞+not is not ,are not 沒有系動詞的 就是助動詞do / did + not答案是didn't do 吧,你說的不大清楚,明天要交滴,再清楚點la~didn't do 就是 did not do 的縮寫啊我給你簡單列一下1:句中有be動詞時,在be動詞后not。如:Iamastudent。(改為否定句)Iamnotastudent。2:如果句中沒有be動詞,找主語,如果主語是第三人稱單數(shù),在主語后加doesn't。如果主語不是第三人稱單數(shù),在主語后加don't。如:She hasabook。(改為否定句She doesn't have abook。(注意:改否定句,句中無be動詞,有have時。如果主語為第一人稱,如I We 等have改否定句后還是have。如果主語是第三人稱單數(shù),改否定句后,has變have??蠢?.第三人稱單數(shù)如:shehe等等3:句中有can ,may在主語后直接加not。 當(dāng)然 你還要注意時態(tài)的問題 過去式 要用 was/ were/did +not
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