1
on the sofa
常用介词on表示在沙发上。
She sat on the sofa.
她坐在沙发上。
沙发
先理解核心含义，再看它在真实句子里的用法。
沙发
an upholstered seat for more than one person
She sat on the sofa.
她坐在沙发上。
沙发:有软垫、高靠背和一二个高扶手、可舒适坐两人的长椅
An upholstered seat with a raised back and one or two raised ends, long enough to comfortably accommodate two or more people.
We bought a new sofa for the living room last weekend.
上周末我们为客厅买了一张新沙发。
The cat is sleeping on the sofa next to the window.
猫正躺在窗户旁边的沙发上睡觉。
She sat on the sofa and read a book for an hour.
她坐在沙发上读了一个小时的书。
常用介词on表示在沙发上。
She sat on the sofa.
她坐在沙发上。
sofa是可数名词，前面需要加冠词。
We need a sofa in the living room.
我们在客厅需要一张沙发。
Not this
I have sofa.
Use this
I have a sofa.
英语中可数名词单数前需要加冠词，'sofa'是可数名词，所以要说'a sofa'。
Not this
He is sitting in the sofa.
Use this
He is sitting on the sofa.
中文表达'在沙发上'容易误用介词'in'，英语中'沙发'表面应用'on'表示在……上。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
沙发床
The sofa bed is perfect for guests.
这张沙发床非常适合客人使用。
沙发垫
I need to fluff the sofa cushions.
我需要把沙发垫拍松。
沙发套装
They bought a new sofa set for the living room.
他们为客厅买了一套新沙发。
沙发套
You can wash the sofa cover in the machine.
你可以把沙发套放进洗衣机里洗。
坐在沙发上
Please sit on the sofa and make yourself comfortable.
请坐在沙发上，别拘束。
Use sofa naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
sofa 发音类似'沙发'，一听到 sofa 就想到舒适的沙发。
常用语家庭起居室，语体中性
Collins 词频等级为 2，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from ECDICT, WIKTIONARY.