must变否定是什么,变一般疑问句是什么?
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:英语作业 时间:2024/07/25 11:43:47
must变否定是什么,变一般疑问句是什么?
![must变否定是什么,变一般疑问句是什么?](/uploads/image/z/2176482-66-2.jpg?t=must%E5%8F%98%E5%90%A6%E5%AE%9A%E6%98%AF%E4%BB%80%E4%B9%88%2C%E5%8F%98%E4%B8%80%E8%88%AC%E7%96%91%E9%97%AE%E5%8F%A5%E6%98%AF%E4%BB%80%E4%B9%88%3F)
1,must做比须时,否定是must not或mustn't;表示推测时,通常与be连用,否定用can't be
2,must做比须时,反义疑问句用mustn't;如You must obey the school rules,mustn't you?
表示推测时,要用be或助动词do的相应时态;如:Tom must be in the school room now,isn't he?
Tom must have arrived yesterday,didn't he?
2,must做比须时,反义疑问句用mustn't;如You must obey the school rules,mustn't you?
表示推测时,要用be或助动词do的相应时态;如:Tom must be in the school room now,isn't he?
Tom must have arrived yesterday,didn't he?