first与firstly两者在语法上有什么区别？
"First" 和 "Firstly" 都是英语中表示顺序或优先级的词汇，但它们在语法上有一些区别。
"First" 是一个形容词，通常用来修饰名词，如 "the first day of the week"（一周的第一天）或 "my first car"（我的第一辆车）。它也可以作为副词，如 "I'll go first"（我先走）或 "He was the first to arrive"（他是第一个到达的）。
"Firstly" 是一个副词，通常用于列举事项或原因，它的意思是“首先”或“第一点”。它常用于正式场合或书面语中，如 "Firstly, I would like to thank you all for coming."（首先，我要感谢大家的光临。）
总的来说，"first" 更常用于口语和日常用语中，而 "firstly" 更常用于正式场合或书面语中。
首先，first与firstly都有“首先”、“第一”的意思，但使用场合不完全一致。First的使用范围较大，可以作名词、形容词和副词，有时还可以代替firstly使用；firstly的运用范围较小，只能作副词，用于列举事实或理由的场合
first和firstly在语法上没有区别，它们都表示“首先”。然而，它们在使用上有一些不同。first通常用于列举事项时，表示第一项，而firstly则更常用于引导一系列列表或步骤中的第一句话。
汽车是伟大的发明英语作文？
A car was invented just a century ago You may know all kinds of cars'names,but many people don't know who was the inventor of the first car
The first car was invented not by an Englishman,but by an American.His name was Henry Ford.
Henry was born in a poor family .He was the eldest of six children.When he was a boy ,he becam interested in watches and machines.When he was twelve years old,his mother died.Soon he had to work in a machine shop for two dollars and fifty cents a week.In the evebings he repaired watches for another dollar a week.The hard life made him strong and able.
At that time there was another interest in the life of the young Ford.He wished to make a machine.It could run without a horse,so named horseless carriage.Heovercame a lot of difficulties and in April 1893,the“horseseless carriage” was invented at last.It was the first car.
Later Henry Ford founded the Ford Motor Company.He was really the first inventor of car in the word.
