New Year's Day is the key to the year.／What you achieve in a year depends on the plans you lay on New Year's Day.
一年ぶりに彼に会った
I saw him for the first time in a year.
2〔学年〕the first year
末の妹は小学校一年です
My youngest sister 「is in the first grade [is a first grader].／《英》 My youngest sister is in the first year at primary school.
一年生1〔小学校の〕a first-year pupil，《米》 a first grader；〔中学校の〕 《米》 a seventh grader，《英》 a first-former, a first-year student at secondary school；〔高校の〕 《米》 a tenth grader（▼６－２－４制の州ではa ninth grader），《英》 a fourth-former；〔大学の〕a freshman（▼米国の大学,4年制の高校では１年生,2年生,3年生,4年生をそれぞれ a freshman, a sophomore, a junior, a seniorという．その他，6－３－３制度で小学校から高校まで通算して高校１年生はa tenth grader, a tenth-grade[-year] studentという），《英》 a student in the first year at university（▼日本の場合，高校［中学］一年生はa first-year student in 「high school [junior high school]）
一年生2〔初心者〕a beginner; a novice
出版業ではまだ一年生だ
He is 「new to [just a beginner in] the publishing business.
