Question

【题目】He put up his tent to keep himself warm. (改为一般疑问句)

_________he_________up his tent to keep himself warm?

Answer 1

【答案】Did put

【解析】

根据主语He第三人称单数，谓语动词put可知此句是一般过去时（put的过去式和过去分词都是put）。可知改为一般疑问句借助助动词did，后面动词改为动词原形。故答案为（1）Did（2）put。