main

adjective

OPAL WOPAL S

/meɪn/

[only before noun]Idioms

being the largest or most important of its kind主要的；最重要的
- Be careful crossing the main road.过大马路时小心点儿。
- the main course (= of a meal)主菜
- We have our main meal at lunchtime.我们的正餐是午饭。
- Reception is in the main building.接待处在主楼。
- Poor housing and unemployment are the main problems.住房条件差和失业是主要问题。
- Loss of habitat is the main reason for the bird's decline.丧失栖息地是这种鸟数量减少的主要原因。
- The main thing is to stay calm.最重要的是要保持冷静。
Synonyms main
mainmajor ▪ key ▪ central ▪ principal ▪ chief ▪ primeThese words all describe somebody/something that is the largest or most important of its kind.
main [only before noun] largest or most important:
Be careful crossing the main road.过大马路时小心点儿。
The main thing is to remain calm.最重要的是要保持冷静。
major [usually before noun] very large or important:
He played a major role in setting up the system.他在建立这个系统的过程中起了主要的作用。
When major is used with the or my/your/his/her/our/their it means ‘the largest or most important’: Our major concern here is combating poverty. In this meaning it is only used to talk about ideas or worries that people have, not physical things, and it is also more formal than main: Be careful crossing the major road. • The major thing is to remain calm. key [usually before noun] most important; essential:
He was a key figure in the campaign.他是这场运动的关键人物。
Key is used most frequently in business and political contexts. It can be used to talk about ideas, or the part that somebody plays in a situation, but not physical things. It is slightly more informal than major, especially when used after a noun and linking verb: Speed is key at this point. central (rather formal) most important:
The central issue is that of widespread racism.最重要的问题是种族主义到处泛滥。
Central is used in a similar way to key, but is more formal. It is most frequently used in the phrase something is central to something else. principal [only before noun] (rather formal) most important:
The principal reason for this omission is lack of time.跳过它的主要原因是时间不足。
Principal is mostly used for statements of fact about which there can be no argument. To state an opinion, or to try to persuade somebody of the facts as you see them, it is more usual to use key or central: The key/central issue here is… chief [only before noun] (rather formal) most important:
Unemployment was the chief cause of poverty.失业是贫穷的主要原因。
prime [only before noun] (rather formal) most important; to be considered first:
My prime concern is to protect my property.我最关心的是保护自己的财产。
Patterns
- a/the main/major/key/central/principal/chief/prime aim/concern
- a/the main/major/principal road/town/city
- the main/key thing is to…
- to be of major/key/central/prime importance
Extra Examples
- Please use the main entrance.请走正门。
- Our main concern is safety.我们主要关心的是安全。
- There were three main political parties in the country.该国存在三个主要政党。
- The main character in this movie is Lucky, an Irish setter.这部电影的主角是“幸运”，一只爱尔兰塞特犬。
- Try to summarize the main points of your argument.尝试总结你的论点的要点。
- The main event is preceded by four bouts, including a five-round title fight.主赛事之前有四场比赛，其中包括五回合的冠军争夺战。
Topics Cooking and eatinga1
Word OriginMiddle English: from Old English mægen ‘physical force’, reinforced by Old Norse meginn, megn ‘strong, powerful’, both from a Germanic base meaning ‘have power’.

Idioms

with an eye for/on/to the main chance

(British English, usually disapproving) with the hope of using a particular situation in order to gain some advantage for yourself瞅机会捞一把

main

noun

/meɪn/

Idioms

[countable] a large pipe that carries water or gas to a building; a large cable that carries electricity to a building（通往建筑物的）主管道，总管，输电干线
- a leaking gas main漏气的煤气总管
- The main serves four towns.这一主管道供 4 个镇使用。
see also ring main, rising main, water mainTopics Houses and homesc2
Oxford Collocations Dictionary
adjective
- gas
- water
- broken
- …
verb + main
- lay
- replace
- repair
- …
main + verb
- serve something
a large pipe that carries waste water and sewage (= human waste, etc.) away from a building（建筑物的）污水总管道Topics Houses and homesc2
Oxford Collocations Dictionary
mains + noun
- electricity
- gas
- water
- …
preposition
- at the mains
- on the mains
phrases
- connected to the mains
the mains
[uncountable, plural] (British English) the place where the supply of water, gas or electricity to a building or an area starts; the system of providing gas, water and electricity to a building or of carrying it away from a building水源；煤气源；电源；（水、煤气、电等的）供应系统；下水道系统
- The house is not yet connected to the mains.这房子还没有通水电。
- at the mains The electricity supply has been cut off at the mains.电的供应在电源处被切断了。
- Plug the transformer into the mains (= the place on a wall where electricity is brought into a room).将变压器插入电源。
- mains gas/water/electricity煤气／水／电供应系统
- The shaver will run off batteries or mains.这个剃须刀可用电池或电源驱动。
- mains drainage排水系统
Extra Examples
- Some of the remoter houses in the town are not on the mains.镇里一些较偏远的住房还没通上水、电、煤气。
- Turn the water off at the mains.把自来水源关掉。
- an island without mains electricity没有通电的岛
Oxford Collocations Dictionary
mains + noun
- electricity
- gas
- water
- …
preposition
- at the mains
- on the mains
phrases
- connected to the mains

Word OriginMiddle English: from Old English mægen ‘physical force’, reinforced by Old Norse meginn, megn ‘strong, powerful’, both from a Germanic base meaning ‘have power’.

Idioms

in the main

used to say that a statement is true in most cases大体上；基本上
- The service here is, in the main, reliable.这里的服务基本上是可靠的。
- In the main, the money raised goes to children’s charities.筹集的资金主要捐给儿童慈善机构。

单词	main
释义	main adjective OPAL WOPAL S /meɪn/ /meɪn/ [only before noun]Idioms being the largest or most important of its kind主要的；最重要的 Be careful crossing the main road.过大马路时小心点儿。 the main course (= of a meal)主菜 We have our main meal at lunchtime.我们的正餐是午饭。 Reception is in the main building.接待处在主楼。 Poor housing and unemployment are the main problems.住房条件差和失业是主要问题。 Loss of habitat is the main reason for the bird's decline.丧失栖息地是这种鸟数量减少的主要原因。 The main thing is to stay calm.最重要的是要保持冷静。 Synonyms mainmainmajor ▪ key ▪ central ▪ principal ▪ chief ▪ primeThese words all describe somebody/something that is the largest or most important of its kind.main [only before noun] largest or most important: Be careful crossing the main road.过大马路时小心点儿。 The main thing is to remain calm.最重要的是要保持冷静。 major [usually before noun] very large or important: He played a major role in setting up the system.他在建立这个系统的过程中起了主要的作用。 When major is used with the or my/your/his/her/our/their it means ‘the largest or most important’: Our major concern here is combating poverty. In this meaning it is only used to talk about ideas or worries that people have, not physical things, and it is also more formal than main: Be careful crossing the major road. • The major thing is to remain calm. key [usually before noun] most important; essential: He was a key figure in the campaign.他是这场运动的关键人物。 Key is used most frequently in business and political contexts. It can be used to talk about ideas, or the part that somebody plays in a situation, but not physical things. It is slightly more informal than major, especially when used after a noun and linking verb: Speed is key at this point. central (rather formal) most important: The central issue is that of widespread racism.最重要的问题是种族主义到处泛滥。 Central is used in a similar way to key, but is more formal. It is most frequently used in the phrase something is central to something else. principal [only before noun] (rather formal) most important: The principal reason for this omission is lack of time.跳过它的主要原因是时间不足。 Principal is mostly used for statements of fact about which there can be no argument. To state an opinion, or to try to persuade somebody of the facts as you see them, it is more usual to use key or central: The key/central issue here is… chief [only before noun] (rather formal) most important: Unemployment was the chief cause of poverty.失业是贫穷的主要原因。 prime [only before noun] (rather formal) most important; to be considered first: My prime concern is to protect my property.我最关心的是保护自己的财产。 Patterns a/the main/major/key/central/principal/chief/prime aim/concern a/the main/major/principal road/town/city the main/key thing is to… to be of major/key/central/prime importance Extra Examples Please use the main entrance.请走正门。 Our main concern is safety.我们主要关心的是安全。 There were three main political parties in the country.该国存在三个主要政党。 The main character in this movie is Lucky, an Irish setter.这部电影的主角是“幸运”，一只爱尔兰塞特犬。 Try to summarize the main points of your argument.尝试总结你的论点的要点。 The main event is preceded by four bouts, including a five-round title fight.主赛事之前有四场比赛，其中包括五回合的冠军争夺战。 Topics Cooking and eatinga1 Word OriginMiddle English: from Old English mægen ‘physical force’, reinforced by Old Norse meginn, megn ‘strong, powerful’, both from a Germanic base meaning ‘have power’. Idioms with an eye for/on/to the main chance (British English, usually disapproving) with the hope of using a particular situation in order to gain some advantage for yourself瞅机会捞一把 main noun /meɪn/ /meɪn/ Idioms [countable] a large pipe that carries water or gas to a building; a large cable that carries electricity to a building（通往建筑物的）主管道，总管，输电干线 a leaking gas main漏气的煤气总管 The main serves four towns.这一主管道供 4 个镇使用。 see also ring main, rising main, water mainTopics Houses and homesc2 Oxford Collocations Dictionaryadjective gas water broken … verb + main lay replace repair … main + verb serve something a large pipe that carries waste water and sewage (= human waste, etc.) away from a building（建筑物的）污水总管道Topics Houses and homesc2 Oxford Collocations Dictionarymains + noun electricity gas water … preposition at the mains on the mains phrases connected to the mains the mains [uncountable, plural] (British English) the place where the supply of water, gas or electricity to a building or an area starts; the system of providing gas, water and electricity to a building or of carrying it away from a building水源；煤气源；电源；（水、煤气、电等的）供应系统；下水道系统 The house is not yet connected to the mains.这房子还没有通水电。 at the mains The electricity supply has been cut off at the mains.电的供应在电源处被切断了。 Plug the transformer into the mains (= the place on a wall where electricity is brought into a room).将变压器插入电源。 mains gas/water/electricity煤气／水／电供应系统 The shaver will run off batteries or mains.这个剃须刀可用电池或电源驱动。 mains drainage排水系统 Extra Examples Some of the remoter houses in the town are not on the mains.镇里一些较偏远的住房还没通上水、电、煤气。 Turn the water off at the mains.把自来水源关掉。 an island without mains electricity没有通电的岛 Oxford Collocations Dictionarymains + noun electricity gas water … preposition at the mains on the mains phrases connected to the mains Word OriginMiddle English: from Old English mægen ‘physical force’, reinforced by Old Norse meginn, megn ‘strong, powerful’, both from a Germanic base meaning ‘have power’. Idioms in the main used to say that a statement is true in most cases大体上；基本上 The service here is, in the main, reliable.这里的服务基本上是可靠的。 In the main, the money raised goes to children’s charities.筹集的资金主要捐给儿童慈善机构。
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