昨天打扫教室用英语怎么说

In English, you can say "I cleaned the classroom yesterday" to express the idea of cleaning a classroom on the previous day. This sentence uses the simple past tense of the verb "to clean," which is "cleaned." The subject of the sentence is "I," and the object is "the classroom."
The verb "to clean" comes from the Old English word "clænan," which means "to make clean or pure." This word is related to other words in English that have to do with cleanliness and purity, such as "cleanse" and "clear."
Here are some examples of this sentence in context:
"I cleaned the classroom yesterday so that it would be ready for today's lesson." (我昨天打扫了教室，这样今天的课就能开始了。)
"Yesterday, I cleaned the blackboard and arranged the desks in the classroom." (昨天，我擦了黑板，并把桌子整理好。)
"After the students left, I cleaned the classroom and made sure everything was in order." (学生们离开后，我打扫了教室，并确保一切都整齐。)