verb + plaintively
plaintively 修饰动词时，可置于动词后，表明该动作带有悲哀或恳求的情绪。
She spoke plaintively about her lost dog.
她哀怨地谈起她丢失的狗。
悲哀地；哀怨地
以哀伤的方式
in a plaintive manner; sadly; mournfully
以哀伤的方式
In a plaintive manner.
The little girl looked up at her mother and asked plaintively for another cookie.
小女孩抬头看着妈妈，哀怨地要求再吃一块饼干。
用法提示：plaintively 是副词，修饰动词 asked，表示带着哀伤或委屈的语气。
He sighed plaintively as he stared out the window at the rain.
他望着窗外的雨，悲哀地叹了口气。
用法提示：plaintively 修饰动词 sighed，表达一种忧伤无奈的情绪。
"Why won't you play with me?" the dog whined plaintively.
“你为什么不和我玩？”狗哀怨地呜咽着。
用法提示：plaintively 修饰动词 whined，显示声音中带着悲哀的恳求。
plaintively 修饰动词时，可置于动词后，表明该动作带有悲哀或恳求的情绪。
She spoke plaintively about her lost dog.
她哀怨地谈起她丢失的狗。
plaintively 也可放在动词前，构成“副词 + 动词”结构，含义不变。
He plaintively asked whether they could leave early.
他哀怨地问他们能不能早点离开。
把 plaintively 放到句首并用逗号隔开，仍修饰整个句子的动作，语气更突出。
Plaintively, she sang the old song.
她哀怨地唱起了那首老歌。
最通用、中性的词；也可作句子副词表示“不幸的是”，此时不能与 plaintively 互换。
语气较重，多用于对亡者或重大失落的哀悼，比 plaintively 更正式、情感更深。
强调因不幸或损失而悲伤，常见于书面语；语义比 sadly 更强。
侧重于带有向往或遗憾的伤感，隐含“渴望”；若语境没有此义，不宜替换。
文学性较强，多形容低沉、沮丧的情绪，在日常口语中用得少。
grammar · medium
易错句子She looked at me plaintive.
正确表达She looked at me plaintively.
修饰动词 look at 需要用副词 plaintively，而 plaintive 是形容词，只能修饰名词或作表语。
grammar · medium
易错句子Please speak plaintively so I can understand you.
正确表达Please speak plainly so I can understand you.
plaintively 意为“哀怨地”，plainly 意为“清楚地/坦率地”；请求别人说清楚应用 plainly，二者形近但含义不同。
与 plaintively（悲哀地、哀怨地）相反；侧重外在表现出的欢快。
与 plaintively 相反；最常用的愉快义项。
与 plaintively 相反；强调内心充满喜悦。
与 plaintively 相反；多指轻松、嬉戏的愉快。
plaintive 是形容词，修饰名词；plaintively 是副词，修饰动词、形容词或其他副词。
plaintively 是“悲哀地”；plainly 是“清楚地/简朴地”，拼写相似但意思无关，勿混。
painfully 侧重肉体或情感上的疼痛；plaintively 侧重哀怨、悲伤的语气。
悲哀地说
“Please don't leave me,” she said plaintively.
“请别离开我，”她悲哀地说。
哀怨地问
Why did you go without me? he asked plaintively.
“你为什么不带我去？”他哀怨地问。
哀伤地哭喊
The lost child cried plaintively for her mother.
走失的孩子哀伤地哭喊着找妈妈。
哀声恳求
He pleaded plaintively for one more chance.
他哀声恳求再给一次机会。
哀叹
She sighed plaintively as she closed the old photo album.
她合上旧相册，哀叹了一声。
faint + ly
quaint + ly
pensive + ly
positive + ly
sensitive + ly
alternative + ly
plaint（词根：悲叹）+ -ive（形容词后缀）+ -ly（副词后缀）｜同根词：plaint（n. 悲叹）、plaintive（adj. 悲哀的）、complain（v. 抱怨）、complaint（n. 投诉）
Dictionary facts from ECDICT, WIKTIONARY.