year noun ⇨years (the best movie I've seen in years)⇨class3 (students in their third year)
years
noun
years ♦︎ months ♦︎ hours ♦︎ ages ♦︎ an eternity ♦︎ aeonThese are all words for a long time.这些词均表示很长时间。PATTERNS AND COLLOCATIONS 句型和搭配◆for years / months / hours / ages / an eternity / aeons◆years / months / hours / ages / an eternity / aeons ago◆to spend / take / wait years / months / hours / ages / an eternity◆years / months / hours elapse / go by / pass■years [plural] (informal) a long time, especially a period of several years数年；很长时间◆It's been years since we last met.我们多年没有见面了。◆They haven't seen each other for years.他们已多年没有见面了。◆That's the best movie I've seen in years.那是我多年来看过的最好的电影。■months [plural] a long time, especially a period of several months数月；很长时间◆He had to wait for months for the visas to come through.他不得不等好几个月才领到签证。◆It will be months before we get the results.我们要等很长时间才能得到结果。■hours [plural] a long time, especially a period of several hours数小时；很长时间◆I've been waiting for hours.我等了好久了。■ages [plural] (especially BrE) (BrE alsoan age [singular]) (informal) a long time很长时间◆I waited for ages.我等了好长时间。◆'How long have you been here?' 'Ages.'“你在这儿多久了？”“老半天了。”◆It's been an age since we've seen them.我们有好些日子没见到他们了。■an eternity [singular] (informal) a period of time that seems to be very long or to never end（似乎）无穷无尽的一段时间◆After what seemed like an eternity the nurse returned with the results of the test.过了漫长的一段时间后护士才拿着检验结果回来。■aeon (BrE) ( eon, especially in NAmE) / /ˈiːən/ / [countable] (formal) an extremely long period of time; thousands of years极漫长的时期；千万年◆These hills have been worn down over aeons of geological time.这些山丘经过漫长的地质时期已经侵蚀得很厉害。◆Only yesterday－and it seemed eons ago, not just a few hours－he had been a happily married man.昨天他还是个婚姻美满的人，但那好像是上辈子的事了，而不是才过去几小时。
class3
noun
Which classes are you taking?你在上什么课？work hard in class在课堂上用功学习the youngest in the class班上年龄最小的人all classes of society社会各阶层class ♦︎ grade ♦︎ year ♦︎ stream ♦︎ track ♦︎ setThese are all words for groups in which students are taught together.这些词均表示班级、年级、小组。PATTERNS AND COLLOCATIONS 句型和搭配◆in a class / grade / year / stream / set■class [countable + singular or plural verb] a group of students who are taught together班；班级◆We were in the same class at school.我们上学时同班。◆He finished top of the class(= got better results than all the others).他在班上名列前茅。◆The whole class was told to stay behind after school.全班被告知放学后留下。◆ (especially NAmE) the class of 2008(= a group of students who finished their studies at school or college in 2008)2008届毕业生◆ (NAmE) the freshman / sophomore / junior / senior class大学或高中一年级／二年级／三年级／四年级■grade [countable](in the US school system) one of the levels in a school with children of similar age（美国学制）年级◆He is in (the) second grade.他读二年级。▸grader
noun
[countable] ◆The play is open to all seventh and eighth graders.所有七、八年级学生均可观看此剧。■year [countable] (especially BrE) (at a school or university) a level that you stay in for one year; a student at a particular level年级；某年级的学生◆We didn't start Latin until year nine.我们直到九年级才开始学习拉丁语。◆The language students go abroad in their third year.学习语言的学生在第三年到国外去。◆The project is the work of a group of year-seven pupils.这个专题研究是一群七年级学生的努力成果。◆First and second years usually live in college.一二年级学生通常住在学院里。■stream [countable] (especially BrE) a group in which students of the same age and level of ability are placed in some schools（将同龄学生按能力编在一起的）班，组◆He was put into the top stream.他分在快班。▸stream
verb
[transitive, usually passive] ◆ (especially BrE) Pupils are streamed for English and Maths.学生上英语课和数学课时按能力分成小组。■track [countable] (NAmE) a group in which students of the same age and level or ability, or studying the same group of subjects, are placed in some schools and colleges（将学生按年龄、水平、能力或修读科目分编的）班，组◆Students pursue one of three tracks: professional writing, film / television / video or new media.学生竞相参加以下三个班中的其中一个：专业写作、影视与录像，以及新媒体。▸track
verb
[intransitive, transitive, usually passive] ◆a comparison of schools that track and don't track in math数学课分班与不分班的学校的对比■set [countable] (BrE) a group of school students of the same age and similar ability in a particular subject who are taught together in that subject although they are normally taught in a different group（一同修学某一科目、但分属不同班级的）一批学生◆She is in the top set for French.她的法语成绩名列前茅。