He is writing a letter in his study. （否定）

jjxyzw 1年前 已收到6个回答 举报
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xiaoyybaobao 幼苗

共回答了15个问题采纳率：100% 举报

He isn't writing a letter in his study.
变否定
有be动词的句子在be动词后加not.
有情态动词的句子在情态动词后加not.
没有be动词的句子在动词前加don't（主语非单三主语）或 doesn't(主语是单三主语）
现在完成时在have,has后加not

1年前 追问

1

jjxyzw 举报

是三单吧

举报 xiaoyybaobao

啥呀？

jjxyzw 举报

没有be动词的句子在动词前加don't（主语非单三主语）或 doesn't(主语是单三主语） 这句话里，是三单吧，你是不是打错了，打成了单三

举报 xiaoyybaobao

都一个意思

jjxyzw 举报

哦

xiaoxiang979 幼苗

共回答了832个问题 举报

hi isn't writing a letter in his study
希望我的回答对你有帮助，祝好。

1年前

2

lengxia1230 幼苗

共回答了2764个问题 举报

he isn't writing a letter in his study.

1年前

1

清平无间 幼苗

共回答了1999个问题 举报

He isn't writing a letter in his study.

1年前

0

hxrdream 幼苗

共回答了3个问题 举报

He is not writing a letter in his study. 否定就在主句的be动词后(am,is are,was,were,been)加not没有be动词就在动词前加助动词， don't didn't 是太不一样

1年前

0

开往春天的火车头 幼苗

共回答了1310个问题 举报

He isn't writing any letter in his study.

1年前

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