《2025年金版新学案高中英语必修第一册人教版》

①I don't believe such an honest boy like him will cheat in the exam, ______?

答案： will he
解析：陈述部分是“I don't believe...”的主从复合句，主句主语是第一人称，附加疑问部分要与从句的主语“an honest boy”（代词用“he”）和谓语“will cheat”保持一致，从句是肯定，所以附加疑问部分用否定“will he”。

②You thought he failed to hand in his homework on time, ______?

答案： didn't you
解析：陈述部分是主句“You thought...”，附加疑问部分要与主句的主语“you”和谓语“thought”（一般过去时）保持一致，主句是肯定，所以用“didn't you”。

③— I spent two weeks in London last summer. — Then you must have visited the British Museum during your stay, ______?

答案： didn't you
解析：陈述部分“must have visited”表示对过去事情的推测，且有具体过去时间状语“last summer”，附加疑问部分用一般过去时，主语是“you”，所以用“didn't you”。

④There is little doubt in your mind that he is innocent, ______?

答案： is there
解析：陈述部分是“there be”结构，“little”表示否定意义，所以附加疑问部分用肯定“is there”。