题目

You are lucky to have a teacher as good as Mr.Smith.He is one in a million.
能说一下这句话的意思吗?
You are lucky to have a teacher as good as Mr.Smith.He is one (in) a million.
是不是他是万中无一的一个好老师?为什么不选of 或from,我选了of错了
我不太明白
还有,_______,I think,and you 'll be hit by the running train .
A.Once you take one more step
B.If you take one more step
C.One more step
D.Taking one more step
为什么选C,答案希望能够讲清楚

提问时间：2020-09-28

答案

选C I think为插入语先去掉 如果选A或B就应去掉and 就是once引导的时间状语从句和If引导的条件状语从句 而此处选C 是因为是祈使句的缘故,省略掉了take,要选D把Taking改为Take即可