attend /əˈtend/

最常见的意思是：参加；出席；上（学校）。

1. 参加、出席 ⭐️

attend a meeting = 参加会议
attend a ceremony = 参加仪式
attend a class = 上课

I attended the meeting yesterday.
我昨天参加了会议。

She attended the ceremony.
她参加了仪式。

2. 上学、就读 ⭐️

attend school = 上学
attend college = 上大学

He attended several schools.
他曾就读过几所学校。

这里的 attend 比 go to 更正式一些。

He went to several schools.
→ 他去了几所学校 / 曾就读过几所学校。

He attended several schools.
→ 他曾就读过几所学校。
（如果讲的是他的教育经历，这个意思非常明确。）

一个重要区别

attend + 地点/活动，通常不需要 to。

❌ attend to school
✅ attend school

❌ attend to the meeting
✅ attend the meeting

但 attend to 是另一个短语，意思是 处理、照料：

I need to attend to this problem.
我需要处理这个问题。