1. 表示“參加”、“出席”，通常用作及物動詞，其賓語通常是meeting, party, show, wedding, class, lecture, school, church等。如：
Did you attend the meeting yesterday? 你昨天去開會了嗎?
He was ill and didn’t attend school. 他有病，沒有去上學。
Her lecture was well attended. 聽她演講的人很多。
有時 attend 後的賓語可以省略，此時為不及物動詞。如：
They had a quiet wedding --- only a few friends attended . 他們的婚禮靜悄悄的'，只有幾個朋友參加。
attend 表示“參加”與 join 不同，參見並比較 join的有關用法。
2. 表示醫生或護士等的“治療”、“護理”、“照顧”等，可用作及物或不及物動詞;用作不及動詞時其後通常接介詞 on。如：
Which doctor is attending you? 哪個醫生在給你治療?
She was attended by Dr Smith. 她由史密斯醫生治療。
I have a good doctor attending me. 我有一個很好的醫生在給我治病。
有時也與介詞 to 連用。
3. 用於短語 attend to, 主要用來表示。如：
①注意聽。如：
Attend carefully . 注意聽。
If you don’t attend ，you will never learn anything. 你要是不注意聽，你就會什麼也學不到。②處理;辦理。如：
I’ll attend to it. 這事我來辦。
I may be late----I have one or two things to attend to. 我可能會遲到，我還有一兩件事要處理。③照顧;照看。如：
If you go out, who will attend to the baby?你要是出去，誰來照顧嬰兒?
Will you attend to the shop for a few minutes while I go to the bank? 在我去銀行時你幫我照看一下店鋪好嗎? ④接待;招待。如：
Are you being attended to, sir? 先生，有人招呼你了嗎?
I’m too busy. I can’t attend to you now. 我很忙，現在不能接待你。⑤專心;關心。如：
Attend to your work and stop talking. 專心工作，不要說話。
Parents must attend to the education of their children. 父母必須要關心子女的教育。⑥治療;醫治。如：
His injury was attended to by a young doctor. 他的傷由一位年輕醫生醫治。
