If only...! 真希望……!若是……那该多好啊!

   (1) 谓语动词用过去式表现在：如：
      例：If only I knew  his name! 要是我知道他的名字就好了。
   (2) 谓语动词用过去完成时表过去：如：
      例：If only we had followed your advice! 我们要是采纳你的意见就好了。
   (3) 谓语动词用could/would表将来：如：
      例：If only I could see him again! 要是我能再看到他多好啊！
          If only she would accept my invitation!

让步状语从句：
   (1) Adj./n./adv. + as/ though+ Subject（主词）+ be, S + V~~~ （虽然...）
      例句：Rich as our country is, the qualities of our living are by no means
            satisfactory.
            虽然我们的国家富有，我们的生活品质绝对令人不满意。
   (2) No matter what等特殊疑问词...   …无论什么…….
      例句：No matter what happens, I'll always stand by you.
            不论发生什么事,我都永远支持你.
   (3) However + adj/adv + S + V,  尽管……
      例：You won't be able to do it alone, however much you try.
          不论你多努力，你一个人也做不来。
   (4) whatever/whoever/whenever/wherever + S + V，无论什么/哪里……
      例：Wherever I am I will be thinking of you. 不管我在哪里我都会想到你。
   (5) whether  … or not
      例：Whether you like it  or not, you'll have to do it.
          不管你喜欢不喜欢，你必须做这件事。
   (6) even if/though
      例：Even if/Even though the exercise is very difficult, you must do it.
          即使那练习很难，你都必须做。

违反常规的冠词位置句型：
   (1) so/as/that/too/how +adj. + a/an + n.
      例：He is as good a student as you. 他和你一样是个好学生。
          This is too difficult a problem for me.对我来说这是一个太难的问题。
          You can hardly imagine how clever a boy he is.
           你几乎想象不到那孩子有多聪明。
   (2) quite/rather/what/such/many + a/an +(adj) +n
      例：She sang quite a beautiful song. 她的歌唱得很漂亮。
          He was such a fool as to believe what she said.
          他是这样的一个笨蛋以致于相信了她说的话。
   (3) all/both/half/twice the + n
      例：All the students in her class like her very much.
          她班上所有的学生都喜欢她。