“so I do”.“so do I”和“I do so”是英语课本中出现的比较常用的三个句型。本文将其用法作简要区别如下: so是用来代替上文的一个分句式或一个部分,一方面用于表示做了自己打算或承诺要做的事,前后句子的主语指同 “So I do”. “So do I” and “I do so” are three commonly used three sentences in English textbooks. This article will make a brief distinction between its usage as follows: so is used to replace a clause or a part of the above, on the one hand used to express their own plans or promise to do, the subject of the sentence before and after the sentence