类型1 表起始关系的过渡性词语 /////////////
first of all, to begin/start with, firstly, nowadays, currently, recently, generally (speaking), these days, with the development of, as far as I know, according to, above all, in one's opinion, by the way, when it comes to..., as sb.know，...
①As you know, China has a growing influence on today's world.(2019·全国卷Ⅰ书面表达)
如你所知，中国对当今世界的影响越来越大。
②By the way, I can also do well in communicating with others in oral English.(2019·全国卷Ⅰ书面表达)
顺便说一句，我的英语口语很好，和别人交流起来没有障碍。
③First of all, bear in mind that you had better arrive several minutes earlier than the appointed time.(2018·全国卷Ⅰ书面表达)
首先，请记住，你最好比约定的时间早几分钟到达。
