1
homesickness for sth
homesickness 通常作不可数名词，后接 for 表示思念的对象。
She understood his homesickness for his family.
她理解他对家人的乡愁。
乡愁
先理解核心含义，再看它在真实句子里的用法。
乡愁
a longing to return home
She understood his homesickness for his family.
她理解他对家人的乡愁。
思乡的特征；身处异地时对家乡(及留下的亲友)的强烈悲伤思念
The characteristic of being homesick; a strong, sad feeling of missing one's home (and often left-behind loved ones, such as family and friends) when physically away.
想回家的渴望
a longing to return home
Her homesickness faded after she made some new friends at school.
她在学校交了一些新朋友后，想家的情绪渐渐淡了。
He tried to relieve his homesickness by calling his family every evening.
他试着每天晚上给家人打电话来缓解乡愁。
The homesickness he felt during his first year abroad eventually disappeared.
他在国外第一年感受到的乡愁最终消失了。
homesickness 通常作不可数名词，后接 for 表示思念的对象。
She understood his homesickness for his family.
她理解他对家人的乡愁。
a wave of 表示“一阵（情绪）”，与 homesickness 搭配时强调突然而强烈的感觉。
A wave of homesickness washed over him as he boarded the plane.
他登机时，一阵乡愁涌上心头。
be overcome with 表示“被（情绪）压倒”，也可写作 be overcome by。
They were overcome with homesickness after hearing the news.
听到这个消息后，他们被乡愁所淹没。
Not this
I am homesickness.
Use this
I am homesick.
be动词后作表语应使用形容词，homesickness是名词，不能直接作表语；表示“想家”的状态要用形容词homesick。
Not this
I am suffering from homesick.
Use this
I am suffering from homesickness.
介词from后必须接名词或动名词作宾语，homesick是形容词，不能作宾语；这里表示“受乡愁之苦”要用名词homesickness。
Not this
I am homesick of my hometown.
Use this
I am homesick for my hometown.
固定搭配be homesick for表示“思念某地/某人”，介词of没有这种用法，不能用of代替for。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
饱受思乡之苦
Many international students suffer from homesickness in their first semester.
许多国际学生在第一个学期饱受思乡之苦。
克服想家情绪
She joined a club to help overcome her homesickness.
她加入了一个社团来帮助自己克服想家情绪。
一阵乡愁
A wave of homesickness swept over him at the sight of the moon.
看到月亮时，一阵乡愁向他袭来。
严重的想家情绪
Severe homesickness can affect a student's academic performance.
严重的想家情绪会影响学生的学业表现。
应对想家情绪
He learned to deal with homesickness by calling his family every day.
他学会通过每天给家里打电话来应对想家情绪。
对抗乡愁
She tried to fight her homesickness by exploring the new city.
她尝试通过探索新城市来对抗乡愁。
Use homesickness naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把home和sickness拼在一起：想家想到像生病一样难受，就是homesickness（乡愁）。
语域：neutral 常见场景：everyday conversation、personal writing、literature 通常属中性词，日常和书面表达中均常见，多用于描述离家后的思乡之情，比较常见于个人叙述、书信和文学描写。
与 homesickness 同韵的词都以 /sɪknəs/ 结尾：sickness、seasickness、airsickness、carsickness。注意 homesick 和 heartsick 拼写相近，但结尾是 /sɪk/，不是 /sɪknəs/，所以并不押韵。
Dictionary facts from ECDICT, WIKTIONARY.