i don't think he put his heart into his study ,______?A.does

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i don't think he put his heart into his study ,______?A.does he B.didn't he C.did he D.doesn't

原题应该是这样：I don't think he puts his heart into his study ,______?A.does he B.didn't he C.did he D.doesn't he
答案是A
在解答反意疑问句时,当主句是I think/suppose/consider/believe/...等时,从句才是表达主要思想的部分,这时附加的问句要针对宾语从句来提问.BC两项时态不对；不选D的原因是题目已经是否定的形式了（否定给转移到前面去）,后面的附加问句要用肯定形式.

i don't think he put his heart into his study ,______?A.does 1.I don't know if his uncle _____.I think he _____if it does -I don't know if his uncle______.-L think he _____if it does I don't think that he does better than his brother改为同义句同义句转换I don't think that he does better than his brother _______ he does his work,I don't mind what time he arrives a I don't think he should leave his job. I don't know __ .A.where does he come from B.what is his nam I don't know______.A.where does he come from B.what is his n 1.I don't know ] A.where does he come from B,what is his nam 几道高一英语1.I don't think he had his supper at the school,----?A Maybe he put it in his pocket,______ he?　　A.does 　　　B.doesn’