1.cigarette指用切碎的烟丝卷成的“香烟”,形状较雪茄烟细短且纸薄。
2.cigarette是可数名词。

I lit a cigarette to calm my nerves.我点燃了一支香烟使自己的神经平静下来。
He crushed out the cigarette.他把烟灭了。
He brushed the ashes from his cigarette. 他拂去香烟上的烟灰。
When the new tax laws were passed, the taxpayers found that the government had clapped another 5% on cigarettes. 新税法通过后,纳税人发现政府在香烟上又增加了5%的税。
I could hardly see her through the haze of cigarette smoke.在香烟的烟雾弥漫中,我简直看不见她。
Cigarette smoking is hazardous to health.吸烟损害健康。
They are quality cigarettes.它们是优质香烟。
My parents forbid me wine and cigarettes.我父母不许我抽烟喝酒。
Don't be surprised if all these cigarettes you are smoking catch up on you one day.如果你现在抽的那些香烟哪一天损害到你的健康,你可别大吃一惊。
My father allows himself only three cigarettes a day.我爸爸给自己规定一天只吸三支烟。
A thief stole some cigarettes from that shop.有个贼从那店里偷走一些香烟。
We sat drinking coffee, smoking cigarettes and talking.我们坐在那里喝咖啡,抽烟交谈。
How much were the cigarettes?—To tell the truth,I forgot to buy them.香烟共多少钱?——实话告诉你吧,我根本忘记买了。
I am ready to wager a package of cigarettes that he will come.我敢打一盒香烟的赌,他一定来。

下面两句的意思相同:
Her bathrobe was dusted with ash from
her cigarette.
Her bathrobe was dusted with ash from
her cigarettes.
她的晨衣上沾有她的香烟掉下的烟灰。
但her cigarette指她正在抽的那支香烟; 而her cigarettes泛指她所抽的香烟,这时她不一定正在吸烟。