However exciting等于：No matter how exciting the movie may be,we have no time to see it.因为No matter how,或者However 是修饰表语 exciting的,所以必须得把exciting 前置,放在No matter how,或者However 之后...although后面要跟主语？也可以是exciting though movie may吧？the moment i ()him i realized that something wrong()应该填see,happen的什么形式？求详细的讲解。如果仅仅表语前置， 那就是：Exciting as (或者though) the movie may be,we have no time to see it 让步句中表语置于句首时， 只能用as 或者although, 不能用其它从属连词再如：Young as / though he is, he knows a lot of things= Though/ Although he is young, he knows a lot of things. (注意， 这里不可以用as)as 作“尽管” 讲， 引导让步句时不能放在句首。 必须表语前置（放在第一位） the moment i (saw )him i realized that something wrong(had happened)realized 一词已经提示是过去， 所以都用过去时态， 由于happen 是在谓语realized 之前发生的， 属于“过去的过去”， 所以用【过去完成时】we had hardly left the building ()it fell down.这里面hardly...when...就没有用一样的时态啊，这也是一。。。就。。。的意思啊，不太懂了，如果hardly表示几乎不的意思的话，那为什么不填after,before呢？如果有The moment, as soon as,before, after 等连词， 可用一般过去时代替过去完成时， 如果用Hardly....when.... 该用什么时态必须得用什么时态。 这是习惯。we had hardly left the building (when)it fell down=As soon as we left the building, it fell down.=The moment we left the building, it fell down