【英语写作八类万能句式】很实用,背好上场心不慌!第一类:表示原因1)There are three reasons for this/...2)The reasons for this are as follows:...3)The reason for this is obvious.4)The reason for this/... is not far to seek.5)The reason for this is that...第二类:表示益处/害处1) It has the foll