when he slept 或who slept this morning?或 when did he sleep?或 when was he sleeping这几句话对吗
问题描述：
when he slept 或who slept this morning?或 when did he sleep?或 when was he sleeping这几句话对吗
哪句不对指出来 并说说有啥区别 尽量说明原因
答
第一句,第四句是错的.第一句因为是个疑问句,并且sleep是个动词,所以要用上助动词,又因为是he第三人称单数,所以要加上does变成when does he sleep?
第四句was sleeping是现在进行时,而when是问什么时候,所以这个句子意思就是不对的.