1.-Where do you think________he_______the computer?-Sorry,I have no idea.A.had ; bought B.has ; bought C.did; buy D./; bought
问题描述：
1.-Where do you think________he_______the computer?
-Sorry,I have no idea.A.had ; bought B.has ; bought C.did; buy D./; bought
答
D./; bought
如果去掉插入语 do you think, 就是很单纯一条问句： Where did he buy the computer?
加了 do you think ，后面成为宾语从句，did he buy 就不能用了，必须改为 he bought.
答
选C.do you think 是插入语。“你认为他在哪里买的这台电脑？”强调过去的动作，所以用过去时。
答
Ddo you think ...后面跟的一个宾语从句,提问时要将宾语从句的特殊疑问词提到句首,因此可以这么看这个句子：where () he () the computer?即他在哪里买的电脑?原本应该是did / buy,但宾语从句规定从句的语序要用正常...
答
D./;bought
插入语do you think后面要用陈述语序，故A，B,C错。