英语句首用First还是Firstly?

英语句首用First还是Firstly? 英语作文连接用first 还是firstly 急.如题还有这2个单词区别. and then与first 联用还是与firstly 联用?first we.and then.firstly,.and then. 英语作文分条陈述的时候是用first,second,third还是用firstly,secondly,thirdly 口语中第一,第二是first,second?还是firstly,secondly? 英语中首先,其次,再次怎么说 是first ,second ,还是firstly,secondly,是放在句首还是句尾,最好有一个例 写英语文章时,需要对一套理论进行分述,是用first、second...last这样的格式,还是用firstly,secondly.lastly这样的格式? first和firstly的用法? would swim first,firstly选能个? 用于罗列几个要点,是first,second,third,last还是firstly,secondly,thirdly,finally? 请问是“Lucy came first in the test.”还是“Lucy came firstly in the test. 英语的列举词有什么比如first,second,third,firstly这些,要复杂一些的 first,at first,first of all,firstly之间的区别 at first /first/ in first / firstly的差异? first,firstly都是副词时有不同吗 英语写文章时First,....Second,… .Third....和Firstly,....Secondly,… .Thirdly....一样的意思么?都一样么? 英语关于first ,firstly,first of all,at first的区别虽然知道first是adj adv n 其他都是adv.但是意思都差不多啊..you must remove it first/first of all（我选了firstly.因为记得一般句尾是副词) 感觉差不多的.有啥 有the first,the next,the last吗?还是不要加the,不加the可以吗?还是说只能Firstly之类的?