1 、Not until the game had begun () at the sports ground
A had he arrived B would he have arrived C did he arrive D should he have arrived
这题选几?为什么,麻烦一定要说下为什么,最好具体点
2、 This is top-secret work. In no circumstances () reveal what you know.
A you will B you can C do you D must you
这题为什么不选C 而选D???
3、How long ()?
A you suppose did it last B do you suppose it lasted C did you suppose it last D you suppose it lasted
这题选什么,我也选错了,麻烦教我下,谢谢。
两题懂了,还有个问题,第二题为什么选must you 而不是do you 呢?
追答这句话明显有情态意义“必须”的意思,当然要选情态助动词must,而不能用一般现在时态的助动词do。
这句话如果转换成陈述语气,应该表述为This is top-secret work.You must not reveal what you know in any circumstances.(这是绝密工作,在任何情况下,你都绝对不能泄露出去)