unless 英 [?n?les] 美 [?n?l?s]conj. 除非，如果不 prep. 除了，…除外 網(wǎng) 絡(luò) 除非； 如果不； 假如不； 若不 1. CONJ-SUBORD 連詞除非；若不；除非在…的時(shí)候 You use unless to introduce the only circumstances in which an event you are mentioning will not take place or in which a statement you are making is not true. Unless you are trying to lose weight to please yourself, it's going to be tough to keep your motivation level high... 除非減肥是為了悅已，否則很難保持積極性。We cannot understand disease unless we understand the person who has the disease... 若不了解患者我們就不能了解疾病。I'm not happy unless I ride or drive every day. 只有每天騎車或開車我才會開心。Usage Note : Do not confuse unless, except, except for, and besides. Unless is used to introduce the only situation in which something will take place or be true. In the 1940s, unless she wore gloves a woman was not properly dressed... You must not give compliments unless you mean them. You cannot use unless to talk about a situation that results from something not happening. Instead you use if...not. I'll be glad if she doesn't come. You use except to introduce the only things, situations, people, or ideas that a statement does not apply to. All of his body relaxed except his right hand... Travelling was impossible, except in the cool of the morning. You use except for before something that prevents a statement from completely true. The classrooms were silent, except for the scratching of pens on paper... I had absolutely no friends except for Tom. You use besides to introduce extra things in addition to the ones you are mentioning already. Fruit will give you, besides enjoyment, a source of vitamins. However, note that if you talk about 'the only thing' or 'the only person besides' a particular person or thing, besides means the same as 'apart from'. He was the only person besides Gertrude who talked to Guy. 不要混淆 unless，except，except for 和 besides。unless用于引出某事發(fā)生或成立所必需的條件，如：In the 1940s, unless she wore gloves a woman was not properly dressed（在20世紀(jì)40年代，女性若不戴手套就算衣著不得體），You must not give compliments unless you mean them（除非出自真心，否則不要隨便恭維）。談?wù)撚捎谀呈挛窗l(fā)生而導(dǎo)致的情形不能用unless，要用 if...not，如：I'll be glad if she doesn't come（如果她不來我會很高興的）。except 用于引出陳述中唯一不適用的事物、情形、人或想法，如：All of his body relaxed except his right hand（除了右手以外，他全身都放松了），Travelling was impossible, except in the cool of the morning （除了在涼爽的早晨，其他時(shí)候出行都是不可能的）。except for用于引出使其陳述不能完全成立的事物，如：The classrooms were silent, except for the scratching of pens on paper（除了筆在紙上發(fā)出的沙沙聲，教室一片寂靜），I had absolutely no friends except for Tom（除了湯姆，我一個(gè)朋友也沒有）。besides用于引出已提到事物之外的其他事物，如：Fruit will give you, besides enjoyment, a source of vitamins（水果不但好吃，而且富含維生素）。但應(yīng)注意，用于談?wù)摮橙嘶蚰澄镏馕ㄒ坏娜嘶蛭飼r(shí)，besides的意思與apart from相同，如：He was the only person besides Gertrude who talked to Guy（除格特魯?shù)轮?，他是唯一跟蓋伊說話的人）。網(wǎng)絡(luò)釋義 unless 1. 除非 ...wherever－(無論在哪里)anywhere－(在…任何地方)everywhere－(到處)3)條件狀語從句if－(如果)，(假如)unless－(除非)，(如果不…)，=if…not…4)原因狀語從句because－(因?yàn)?，側(cè)重從句內(nèi)容、since－(由于)，(既然)，側(cè)重主句內(nèi)容、as－(由. 2. 如果不 chopstick筷子unless除非，如果不emperor皇帝 3. 假如不 we will spend our holiday in the south unless we are busy ., 假如不忙 , 我們將在南方度假. 4. 若不 unless you wear boots you may be bitted by snakes ., 若不穿靴子你可能被蛇咬. 相關(guān)詞條 unless used 1. 除非使用 1. 無執(zhí)照的引航員unless used 除非使用unlighted buoy 無光浮標(biāo) unless you 1. 除非你 you will forget my number unless you write it down ., 你會忘記我的電話號碼 , 除非你把它寫下來. 2. 如果你 you will gain flesh unless you take more exercises ., 如果你不多作運(yùn)動(dòng) , 就會發(fā)胖. unless general 1. 除非共同海損 ...unless caused by …除非有……引起除非由……引起unless general 除非共同海損unless otherwise directed 除非另有指示 unless clause 1. 除非條款 unleaded gasoline 無鉛汽油unless clause 除非條款unless lease 除非…租賃 1. The targets would not be achieved unless other departments showed equal commitment. 除非其他部門同樣努力，否則這些目標(biāo)無法達(dá)成。 2. Training is worthless unless there is proof that it works. 除非能證明訓(xùn)練有效，否則就是白搭。 3. The South African mailboat arrived on Friday mornings unless bad weather intervened. 除非受惡劣天氣干擾，南非郵船一般在星期五上午抵達(dá)。 4. All bitches should be spayed unless being used for breeding. 除非是用作種犬，所有的母犬都應(yīng)摘除卵巢。 5. I tend to forget things unless I mark them down. 除非把事情記下來，否則我常常會忘事。