attend:
vt.出席,参加,照顾,护理,注意,由……陪同；vi.专心,留意
助记：attendance n.出席,出席的人数,伺候,照料；attendant n.服务员
典型例句：
They attended our affairs during our absence.
他们在我们不在时管理我们的事务。
He attended my every word in class.上课时他倾听我的每一句话。
So many people attended the meeting.很多人出席了这次会议。
We’ll attend to that problem later.稍后我们将关注那个问题。
I will attend you to the classroom.我将陪你到教室去。
May good luck attend you!祝你幸运!
习惯用语：attend on服侍,照料;陪,随从
attend upon服侍,照料;陪,随从
attend to倾听,注意,留心；关心,照顾,护理;办理
1. attend on sb 照料某人，服侍某人。如：Who will attend on the patient? 谁来护理病人? He was attended on by a number of servants. 有好多佣人侍候他。注：有时其中的介词 on 可以省略。如：He has two nurses attending (on) him. 有两位护士护理他。
2. attend to
(1) 注意听。如：Attend now to what I tell you. 现在注意听我给你讲。If you don’t attend to your teacher, you’ll never learn anything. 你要是不注意听老师讲，你就会什么也学不到。
(2) 处理；办理。如：I’ll attend to the matter. 这事我来处理。I may be late --- I have one or two things to attend to. 我可能会迟到，我还有一两件事要处理。
(3) 照顾；照看。如：If you go out, who will attend to the baby? 你要是出去，谁来照顾婴儿? 你要是出去，谁来照顾婴儿Will you attend to the shop for a few minutes while I go to the bank? 在我去银行时你帮我照看一下店铺好吗?
(4) 接待；招待。如：Are you being attended to, sir? 先生， 有人招呼你了吗? I’m too busy. I can’t attend to you now. 我很忙，现在不能接待你。
(5) 专心；关心。如：You must attend to your work. 你必须专心工作。Parents must attend to the education of their children. 父母必须要关心子女的教育。Parents must attend to the educatioght: normal">
(6) 治疗；医治。如：His injury was attended to by a young doctor. 他的伤由一位年轻医生医治。
participate in:正式用词，表示参加、参与，强调与他人***同参加某种活动
attend:正式用词，一般用于指参加会议、出席典礼或招待会等，也可以指上学、听课、听演讲或讲座等
enter:常用词，可以表示加入、参加某个组织，也可以表示参加比赛，以contest.competition.examination.race等词为宾语，常用于enter into表示参加、开始（讨论）等
jion:常用词，作及物动词时用于加入某个组织（jion a club 加入俱乐部），jion sb.表示随同某人，与某人一起;作不及物动词时，可表示参加某项活动，后接介词in再加宾语（jion in the game 参加游戏），若介词in后面不接宾语，则表示参加进来的意思
take part in:与participate in 基本同义，均指参与某种活动并起作用，常可互换使用
典型考题：
Although I had been invited to the opening ceremony,I was unable to attend__________such short notice.
A.to B.in C.upon D.with
答案：A
attend. / take part in./ join
1． He will _______an important meeting tomorrow.
2． My wish is to _____the army after graduating.
3． We often ____________social activities during summer holidays.
4． Why didn’t you _______the talk last night?
5． They didn’t _______the wedding.
6． Come and _____us , Xiaowang.
7． Our teacher will ____us ____the discussion.
答案：1. attend 2. join 3. take part in 4. join in 5. attend
6. join 7. join in