sofa:n. 沙发；长椅The old sofa will have to go.那旧沙发该扔掉了。
She was reclining on a sofa.她倚靠在沙发上。I decided to ditch the sofa bed.我决定把沙发床扔掉。The sofa also functions as a bed.这沙发还可当床用。couch:n. 睡椅，长沙发；床；卧榻vi. 蹲伏，埋伏；躺着vt. 使躺下；表达；弯下My mother likes this newly bought couch very much.我妈妈很喜欢新买的这个长沙发。Your promise was couched in a careless way.你的承诺说得很随便。My son jumped onto the couch in the doctor's office.在医生的办公室里，我的儿子跳到了诊察台上。
