I think he can speak English well.（改为反意疑问句） I think he can speak English well,_____ ___?

题目

I think he can speak English well.（改为反意疑问句） I think he can speak English well,_____ ___?

答案

答案是can't he
在这种复合句中,从句的主语he是作为反问的主体,所以第二空填he；
从句的谓语是情态动词can,故第一空的反问词要用can,再根据“前肯定,后否定”的定律,所以应该是否定形式can't.