no /nəu/ I. adj. 1. 没有： There is no fire without some smoke.［谚］无风不起浪。No pains, no gains.［谚］不劳无获。 2.很少，很小：They finished the task in no time.他们很快就完成了任务。There was no knowing when he would be back. 无法知道他什么时候回来。3.决非，决不： He is no fool. 他决不是个傻子。He is no friend of mine.他决不是我的朋友。4.(表示禁止)不许：No smoking here. 此处禁止吸烟。 No spitting.严禁随地吐痰。No bicycle against the wall. 严禁靠墙放自行车。 5. (用于 It is no use (good)和 There’s no use (good) doing sth.结构中)不可能：It is no use trying again. 再试也没有用。II.adv. 1. (用于表示否定的回答)不： — Will you come? — No, I won’t.“你来吗?” “不，我不来。” 2. (用于对否定句做出反应)对；是： — Won’t you come? — No,I won’t.“你不来吗?”“对，我不来。” 3. (用于形容词，副词的比较级前)并不，毫不：I can walk no further.我再也走不动了。 no longer 不再： The shore was no longer in sight.不再能看见海岸了。 no more than只，仅仅： I have no more than five dollars. 我只有5块钱。no more…than 和…一样不：Tom is no more diligent than John.汤姆不勤奋，约翰也不勤奋。 no sooner…than: 刚…就： No sooner had we got to the station than the train left. 我们刚一到车站，火车就开了。