Question

谁能帮我解释几道英语单选题，谢谢

1.not until the game had begun__at the sports ground.
答案did he arrive 我选would he arrive

2.never before__won gold medals in the Olympic Games.
答案have so many Chinese athletes 我选so many Chinese athletes have

3.little__about what he is doing.
答案do we know 我选we know

4.__got into the room__the telephone rang.
答案hardly had he,when 我选not had he,when

5.the rice__if you had been more careful.
答案would not have been burnt 我选would not be burnt

6."what happened to the flower I gave you?""the flower__well,but I didn't water it.
答案would have grown 我选would grow

7.our demand is that another experiment__.
答案be made 我选shall be maed

Answer 1

1-4是倒装语法项目里面的
比如第一个，把句子按正常语序表述 应该是 He didn't arrive at the sports ground until the game had begun.（陈述发生在过去的事情，不过强调了一下arrive 和 begin 的前后关系)
3-4同理。看笔记哈，各种情况的倒装都有解释- _-

5-7 都是虚拟语气
比如第5 是对发生过的事情进行一种假设，“如果你（那时候）再仔细一点的话，米饭就不会糊了”，这种虚拟语气，要求主句过去将来时，从句过去完成时，也就是把主从句的时态整体向前推一下。
6，7都一个道理。
好好看看老师记的笔记，哪种情况，主从句分别要求用什么时态，好好体会一下，实在不懂语法，就找几个典型的句子背诵一下。毕竟虚拟语气的情况很多呢。

祝进步↖(^ω^)↗

Answer 2

1. not until 句子要倒装，前半句是过去完成时，过去完成时表示“过去的过去”，所以后半句需要表示成过去时才能使得前半句的过去完成时成立，所以要用did，不能表示将来的would。
2.never 是否定词，放在句首要倒装，就像第一题一样，所以要将助动词提前，have就要提前。
3.little 表示极少量，几乎没有，是个表示否定意义的词，所以也要倒装，助动词要提前，do 放前面 就和第二题一样了。
4.hardly ...when固定搭配，意为“一...就...” hardly 也是表示否定意义的词，和第三题又一样，另外，hardly后必须要接had的过去完成时。

后几个我在学的时候也学的狠糊涂，还解释不清，不好意思。