1、They refused to release their hostagesunless certain conditions were met.(除非某些条件得到满足，否则他们不会释放人质。)
2、You are allowed 20kgs of baggageunless indicated otherwise on your ticket.(除非票上另有注明，否则可携带行李为20公斤。)
3、All bitches should be spayedunless being used for breeding.(除非用于繁殖，所有母狗的卵巢都应被切除。)
4、That's the plan—unless anything untoward happens.(计划就这么定了—除非出现异常情况。)
5、Training is worthlessunless there is proof that it works.(训练并无价值，除非证明其有效。)
6、The president could face a rough rideunless the plan works.(除非计划奏效，否则该总统会面临一个难关。)
7、Her bank warned thatunless she repaid the overdraft she could face legal action.(她的银行警告说除非她偿还透支款，否则她可能要面临诉讼。)
8、Have a cup of tea—unless you'd prefer a cold drink?(喝杯茶吧—除非你喜欢冷饮？)
9、The theatre faces closureunless it gets an urgent cash injection.(剧院面临着倒闭，除非有大笔救急现金投入。)
10、Life on Earth will become unsustainableunless population growth is held in check.(地球上的生命将无法延续，除非人口增长得到控制。)
11、Most dogs will not attackunless provoked.(大多数狗受到挑衅才会攻击。)
12、unless she loses some weight, she's had it.(除非她减掉一些体重，否则她就完蛋了。)
13、unless I'm mistaken, she was back at work yesterday.(除非是我记错了，她是昨天回来上班的。)
14、In the past, the UN has stayed out of the internal affairs of countriesunless invited in.(在过去，除非受邀请介入，否则联合国不参与各国的内部事务。)
15、unless these questions are solved, the region will remain a powder keg.(除非这些问题得以解决，否则该地区会一直是个火药桶。)
16、We cannot understand diseaseunless we understand the person who has the disease.(除非我们了解有某种疾病的人，否则我们不会了解疾病。)
17、The economy is in danger of collapseunless far-reaching reforms are implemented.(除非实施影响深远的改革，否则经济就有崩溃的危险。)
18、I tend to forget thingsunless I mark them down.(我常常会忘事，除非我把它们记下来。)
19、I won't tell them—notunless you say I can.(我绝不告诉他们—除非你允许。)
20、unless he was equipped with a directional microphone, he was out of earshot.(除非给他配备一个定向扬声器，否则谁也听不见他。)
21、The mailboat arrived on Friday morningsunless bad weather intervened.(除非受到恶劣天气的干扰，邮船于星期五上午到达。)
22、Recovery can't be sustainedunless more jobs are created.(除非有更多的工作机会被创造出来，否则复苏无法保持下去。)
23、She refused to testify,unless the murder charge against her was dropped.(她拒绝作证，除非取消她的谋杀指控。)
24、The boat will sinkunless we bail out.(我们若不排水，船就要沉。)
25、He resolutely refused to speak Englishunless forced to.(除非被逼迫，他坚决拒绝说英语。)
26、You won't get paid for time offunless you have a doctor's note.(除非你有医生证明，否则你不上班便拿不到工资。)
27、The country has been threatened with complete isolation from the international communityunless the atrocities stop.(这个国家受到了完全被国际社会孤立的威胁，除非其暴行得以制止。)
28、Why did you need a roomunless you were up to something?(除非你要捣什么鬼，不然为什么需要一个房间呢？)
29、He hasn't got any hobbies—unless you call watching TV a hobby.(他没有什么爱好—除非你把看电视也称作爱好。)
30、unless you are trying to lose weight to please yourself, it's going to be tough to keep your motivation level high.(除非你在为了让自己开心而努力减肥，否则要保持驱动力很高将很难。)
