英语学道原创
class /klɑːs/ n.班级；课；等级
classmate /ˈklɑːsmeɪt/ n.同班同学
【精选例句】I will take photos together with my classmates and write my best wishes on the back of each photo. (咸宁)
【词语联想】相关联想：classmate *schoolmate校友；*roommate室友；*deskmate同桌
classroom /ˈklɑːsrʊm/ n.教室
【精选例句】The girl in the classroom can’t be Sarah. She has gone to the library. (青岛)
Don’t forget to turn out the light when you leave the classroom.
clean /kliːn/ a.清洁的，干净的 v.清理，打扫
【备考短语】~ up收拾干净；清除
【精选例句】For people in developing countries, clean water can change many things, especially improve their health. (长沙)
Many volunteers will help to clean up the city parks next Friday. (厦门)
clear /klɪə/ a.清晰的；晴朗的；清澈的 v.使明白；清除
She cleared her throat and said, “Good afternoon. I’m Emily.” (北京)