作业帮 > 英语 > 作业

she must has been thirty 的反义疑问句

来源:学生作业帮 编辑:灵鹊做题网作业帮 分类:英语作业 时间:2024/04/28 08:58:02
she must has been thirty 的反义疑问句
she must has been thirty 的反义疑问句
must have done:
1,表示对过去的情况进行推测(一般句中有明确的过去时间状语),问句要根据陈述部分 谓语的情况用“didn't+主语”或“wasn't/weren't+主语”
2,如果强调动作的完成(一般没有明确的过去时间状语),问句要用“haven't/hasn't+主语”.
此处没有出现过去的时间状语,则用 hasn't+主语形式:
She must has been thirsty,hasn't she?