ranks是一个英语单词，读作/ræŋks/。它可以作为名词或动词使用，意思是“等级、阶层、排列、衔”等。它的复数形式也是ranks。

用法：

1. 名词用法：表示等级、阶层时，常与介词in连用，表示在某个等级或阶层中。：He has risen through the ranks to become a executive. (他从基层做起，最终成为高管。)

2. 动词用法：表示排列时，常与介词with连用，表示按照某种顺序排列。：The students were ranked according to their grades. (学生们按照成绩排名。)

例句：

1. The company's employees are divided into different ranks based on their job titles and responsibilities.

(公司的员工根据职称和职责被分为不同的等级。)

2. She quickly rose through the ranks and became the youngest director in the company's history.

(她迅速晋升，并成为公司历史上最年轻的董事。)

3. The soldiers marched in perfect ranks, with their heads held high and their uniforms spotless.

(士们整齐地行进着，头抬得高高的，制服一尘不染。)

4. The athletes were ranked according to their performance in the competition.

(运动员们根据比赛表现进行排名。)

5. The ranks of the protesters grew larger as more people joined the demonstration.

(随着更多的人加入活动，者的队伍变得越来越庞大。)

同义词及用法：

1. hierarchy：名词，意为“等级制度、阶层”，常用来描述组织或社会中的等级结构。：The company has a strict hierarchy, with clear lines of authority. (公司有严格的等级制度，权力界限明确。)

2. grade：名词，意为“等级、年级”，常用来表示学生的年级或产品的质量等级。：She is in the fifth grade. (她在五年级。)

3. order：名词，意为“顺序、秩序”，常用来表示事物之间的排列顺序。：Please put the books back in alphabetical order. (请按照字母顺序把书放回去。)

4. file：名词，意为“档案、文件”，常用来表示文件或纸张的整齐排列。：He organized his papers into neat files on his desk. (他把文件整理成整齐的档案放在桌子上。)

编辑总结：

ranks是一个常见的英语单词，可以作为名词或动词使用，意思是“等级、阶层、排列、衔”等。它有多种用法和搭配，常与介词连用，表示不同的含义。在写作中，可以根据具体语境来选择合适的搭配方式。同时，还可以通过使用同义词来丰富表达，使文章更加生动有趣。