英语词汇necessary的词组、短语、固定搭配翻译、用法及例句-英语词组固定搭配大全

necessary /ˈnesəsəri, ˈnesɪsəri $ -seri/ adjective used to describe something that you need to have or doadverbsabsolutely necessary Force is only used when absolutely necessary.strictly necessary (=really necessary – used especially when saying that something is not necessary) He spoke for longer than was strictly necessary.verbsbecome necessary It became necessary to find another office.make it necessary to do sth Larger ships made it necessary to create a new port.find it necessary to do sth I rarely find it necessary to use a ruler.prove necessary formal (=be necessary) It may prove necessary to increase the number of staff.consider sth necessary also deem sth necessary formal The court may deem it necessary for the person to stay in prison.nounsthe necessary information We couldn’t make a decision, because we didn’t have all the necessary information.the necessary skills/knowledge/experience He lacks the necessary skills and experience.the necessary steps/arrangements/measures People should take the necessary steps to protect themselves from burglars.the necessary changes It will take up to two years to make the necessary changes.a necessary part of sth Many people look on religion as a necessary part of life.a necessary evil (=someone or something that you must have, even though you do not want to) Voters see taxation as a necessary evil.prepositionsnecessary for sth Oxygen is necessary for life.phrasesit is necessary (for sb to do sth) They try to only spend money when it is necessary.if necessary We are willing to fight, if necessary.as necessary (=whenever necessary) Repeat this process as necessary.THESAURUS: necessary essential very important and necessary, especially in order to be healthy, successful etc: Vitamins are essential for healthy growth. | Oxygen is essential to life. | The tourist industry is an essential part of the Spanish economy. | The other essential element in political success is luck (=an essential part of something - a rather formal use). vitalpart | piece | evidence extremely important and necessary, especially in order to avoid serious problems: Investment in science is a vital part of the nation's economy. | A vital piece of equipment on the spacecraft had stopped operating. | His evidence was seen as vital to the trial. | It is vital that the aid is sent immediately. compulsorytraining | education | subject | military service | retirement | redundancy if something is compulsory, you must do it because of a rule or law: All new staff have to attend a compulsory training course. | Education is compulsory for all children from 5 to 16 years of age in England. | Maths and Science are compulsory subjects. | The government introduced compulsory military service. | They want to end compulsory retirement at 65. obligatory if something is obligatory, you must do it because of a rule or law. Obligatory is more formal than compulsory: The use of seatbelts is obligatory. | Safety regulations have made it obligatory for all fighters to wear gloves. mandatorysentence | penalty | award | limit | retirement | requirement if something is mandatory, you must do it because it is the law. Mandatory is more formal than compulsory and sounds stronger: The prisoner is serving a mandatory life sentence (=he will spend the rest of his life in prison, because the law says that he must be punished in this way). | Levitt had reached the company's mandatory retirement age of 70. | School attendance is mandatory. requisite /ˈrekwəzət, ˈrekwɪzət/ formalnumber | amount | level | majority | skills | experience | information | evidence | period the requisite things are the ones that you need to have in order to do something: We need to make sure that each event is staffed by the requisite number of officials. | I waited for what I thought was the requisite amount of time. | The Chancellor failed to attain the requisite majority by two votes. | The other candidates lacked the requisite skills. | The police did not have the requisite evidence needed for a successful prosecution.ANTONYMS → unnecessary

词组	necessary
释义	necessary /ˈnesəsəri, ˈnesɪsəri $ -seri/ adjective used to describe something that you need to have or doadverbsabsolutely necessary Force is only used when absolutely necessary.strictly necessary (=really necessary – used especially when saying that something is not necessary) He spoke for longer than was strictly necessary.verbsbecome necessary It became necessary to find another office.make it necessary to do sth Larger ships made it necessary to create a new port.find it necessary to do sth I rarely find it necessary to use a ruler.prove necessary formal (=be necessary) It may prove necessary to increase the number of staff.consider sth necessary also deem sth necessary formal The court may deem it necessary for the person to stay in prison.nounsthe necessary information We couldn’t make a decision, because we didn’t have all the necessary information.the necessary skills/knowledge/experience He lacks the necessary skills and experience.the necessary steps/arrangements/measures People should take the necessary steps to protect themselves from burglars.the necessary changes It will take up to two years to make the necessary changes.a necessary part of sth Many people look on religion as a necessary part of life.a necessary evil (=someone or something that you must have, even though you do not want to) Voters see taxation as a necessary evil.prepositionsnecessary for sth Oxygen is necessary for life.phrasesit is necessary (for sb to do sth) They try to only spend money when it is necessary.if necessary We are willing to fight, if necessary.as necessary (=whenever necessary) Repeat this process as necessary.THESAURUS: necessary essential very important and necessary, especially in order to be healthy, successful etc: Vitamins are essential for healthy growth. \| Oxygen is essential to life. \| The tourist industry is an essential part of the Spanish economy. \| The other essential element in political success is luck (=an essential part of something - a rather formal use). vitalpart \| piece \| evidence extremely important and necessary, especially in order to avoid serious problems: Investment in science is a vital part of the nation's economy. \| A vital piece of equipment on the spacecraft had stopped operating. \| His evidence was seen as vital to the trial. \| It is vital that the aid is sent immediately. compulsorytraining \| education \| subject \| military service \| retirement \| redundancy if something is compulsory, you must do it because of a rule or law: All new staff have to attend a compulsory training course. \| Education is compulsory for all children from 5 to 16 years of age in England. \| Maths and Science are compulsory subjects. \| The government introduced compulsory military service. \| They want to end compulsory retirement at 65. obligatory if something is obligatory, you must do it because of a rule or law. Obligatory is more formal than compulsory: The use of seatbelts is obligatory. \| Safety regulations have made it obligatory for all fighters to wear gloves. mandatorysentence \| penalty \| award \| limit \| retirement \| requirement if something is mandatory, you must do it because it is the law. Mandatory is more formal than compulsory and sounds stronger: The prisoner is serving a mandatory life sentence (=he will spend the rest of his life in prison, because the law says that he must be punished in this way). \| Levitt had reached the company's mandatory retirement age of 70. \| School attendance is mandatory. requisite /ˈrekwəzət, ˈrekwɪzət/ formalnumber \| amount \| level \| majority \| skills \| experience \| information \| evidence \| period the requisite things are the ones that you need to have in order to do something: We need to make sure that each event is staffed by the requisite number of officials. \| I waited for what I thought was the requisite amount of time. \| The Chancellor failed to attain the requisite majority by two votes. \| The other candidates lacked the requisite skills. \| The police did not have the requisite evidence needed for a successful prosecution.ANTONYMS → unnecessary
随便看	recommend recommendation record recording recover recovery recycle red reduce reduction redundancy redundant re-elect referee reference referendum refinery reflection reform refugee refund refusal refuse regain regard